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Showing posts from July, 2025

Graphing Inequalities on a Number Line

 Graphing Inequalities on a Number Line Visualizing inequalities on a number line helps us understand which values satisfy an inequality. This lesson shows you how to graph them step by step. --- 🔸 How to Graph an Inequality Steps to follow: 1. Draw a number line 2. Mark the value in the inequality 3. Use: Open circle (○) for or — value not included Closed circle (●) for or — value included 4. Shade the direction: Left for less than Right for greater than --- ✅ Example 1: Graph  Open circle at 4 Shade to the left <=========○---------  4 ✅ Final Answer: x < 4 --- ✅ Example 2: Graph  Closed circle at –2 Shade to the right --------●=========> -2 ✅ Final Answer: x ≥ –2 --- 🔸 Quick Summary: Symbols and Circles Symbol Type of Dot Includes the Number?  or Open circle (○) ❌ No  or Closed circle (●) ✅ Yes 📝 Practice Questions: Practice: Graph the following inequalities on a number line. 1. x > 2 2. x ≤ 0 3. x ≥ –5 4. x < –1 5. x ≥ 7 📘 Keep l...

Introduction to Inequalities

 What are Inequalities? In algebra, not all expressions are equal — some are greater or less than others. Inequalities help us compare values that are not exactly equal. --- 🔸 What is an Inequality? An inequality is a mathematical sentence that shows the relationship between two expressions using comparison symbols. --- 🔸 Common Inequality Symbols Symbol Meaning Example > Greater than x > 4 < Less than x < 7 ≥ Greater than or equal to x ≥ 2 ≤ Less than or equal to x ≤ 5 --- 🔸 Difference Between Equations and Inequalities An equation gives one exact answer:   ✅ x = 3 An inequality gives many possible answers:   ✅ x > 3 (x could be 4, 5, 100…) --- 🔸 Solving Inequalities Solving inequalities is almost the same as solving equations: You can add, subtract, multiply, or divide both sides. BUT, if you multiply or divide by a negative number, flip the sign. --- ✅ Examples Example 1: Solve x + 4 < 9 Step: Subtract 4 from both sides Answer: x < 5 Example 2: Solve –2x...

Like and Unlike Terms

Like and Unlike Terms In algebra, knowing which terms you can combine is important. That’s where the concept of like terms and unlike terms comes in. --- ✅ What Are Like Terms? Like terms are terms that: Have the same variable, and Have the same exponent (power) Only the coefficients (numbers in front) can be different. Examples of Like Terms: 2x and 5x 3a² and -7a² x and -x --- ❌ What Are Unlike Terms? Unlike terms have: Different variables, or The same variables but different powers Examples of Unlike Terms: 3x and 4y 2a and 2a² x and x² --- ✍️ Examples Example 1: Which of the following are like terms? 5y, -2y, 3x, 7y ✅ Like terms: 5y, -2y, 7y ❌ Unlike term: 3x Example 2: Group the like terms: 2m, 3n, -4m, 5n, 6 Like terms: 2m, -4m and 3n, 5n Constant: 6 (unlike any other) --- 📝 Practice Questions 1. Identify the like and unlike terms in this set: 6x, -3x, 4y, x² 2. Group the like terms in: 2a, 3b, 5a, -2b, 7 --- ✅ Keep learning! Stay tuned for the next topic! 📖 Visit our blog: eas...

Parts of an Expression

An algebraic expression is a combination of numbers, letters (variables), and mathematical operations such as addition, subtraction, multiplication, or division. ✅ Key Parts of an Expression 1. Term A term is any part of the expression that is separated by a plus (+) or minus (−) sign. Example: In the expression 3x + 4, there are two terms: 3x and 4. 2. Coefficient A coefficient is the numerical part of a term with a variable. Example: In 3x, the coefficient is 3. 3. Variable A variable is a symbol (often a letter like x or y) that represents an unknown value. Example: In 3x + 4, the variable is x. 4. Constant A constant is a fixed value with no variable attached. Example: In 3x + 4, the constant is 4. --- ✍️ Examples Example 1: Expression: 7y − 2 Terms: 7y, −2 Coefficient: 7 Variable: y Constant: −2 Example 2: Expression: 5a + 3b − 7 Terms: 5a, 3b, −7 Coefficients: 5, 3 Variables: a, b Constant: −7 --- 📝 Practice Questions 1. Identify the terms, coefficients, and constants in the exp...

Real-Life Word Problems Involving Fractions

Welcome back to EasyMathsGuid! In this lesson, we’re solving real-life word problems using fractions. These help you apply math to everyday situations. --- 🔶 Word Problem 1 A school bought 7 1/2 kilograms of rice for a math club event. They used 2 2/3 kilograms for lunch and 1 3/4 kilograms for dinner. Question: How much rice is left? --- 🧮 Solution: Step 1: Convert mixed numbers: 7 1/2 = 15/2 2 2/3 = 8/3 1 3/4 = 7/4 Step 2: Add lunch and dinner used: 8/3 = 32/12 7/4 = 21/12 Total used = 32/12 + 21/12 = 53/12 Step 3: Total rice = 15/2 = 90/12 Step 4: Leftover = 90/12 - 53/12 = 37/12 = 3 1/12 ✅ Final Answer: 3 1/12 kg of rice is left --- 🔷 Word Problem 2 Mary read 3/4 of a book in the morning and 2/5 in the evening. How much of the book did she read in total? --- 🧮 Solution: LCM of 4 and 5 = 20 3/4 = 15/20 2/5 = 8/20 Total = 15/20 + 8/20 = 23/20 = 1 3/20 ✅ Answer: Mary read 1 3/20 of the book --- 🔷 Word Problem 3 A water tank contains 5 1/2 liters of water. If 3 3/4 liters are used...

Solving Word Problems Involving Fractions in Equations

This lesson shows how to solve real-world problems where fractions are involved in the equation. It builds directly from Lesson 12 on dividing fractions. --- 🔍 Steps to Solve: 1. Read the word problem carefully. 2. Let the unknown number be x. 3. Translate the words into a fraction-based equation. 4. Solve by multiplying by the reciprocal or using the LCM method. 5. State your final answer clearly. --- 📘 Example 1: Problem: One-third of a number is 9. What is the number? Solution: Let the number be x. (1/3) × x = 9 Multiply both sides by 3: x = 9 × 3 = 27 ✅ Final Answer: 27 --- 📘 Example 2: Problem: Half a number minus 2 equals 3. Find the number. Solution: (1/2) × x - 2 = 3 Add 2 to both sides: (1/2) × x = 5 Multiply both sides by 2: x = 10 ✅ Final Answer: 10 --- 📘 Example 3: Problem: Two-thirds of a number equals 16. What is the number? Solution: (2/3) × x = 16 Multiply both sides by 3/2: x = 16 × (3/2) = 48/2 = 24 ✅ Final Answer: 24 --- 📝 Practice Questions: 1. One-fourth of a ...

Dividing Fractions in Equations

In this lesson, we’ll learn how to solve equations where a variable is divided by a fraction — a key part of mastering algebra. --- ✏️ Concept: When solving an equation like: x ÷ (a/b) = c, you multiply both sides by the reciprocal of the fraction. > ✨ Remember: Dividing by a fraction is the same as multiplying by its reciprocal. --- 📘 Example 1: Solve: x ÷ (2/3) = 6 👉 Multiply both sides by 3/2 (the reciprocal of 2/3): x = 6 × (3/2) = 18/2 = 9 ✅ Final Answer: x = 9 --- 📘 Example 2: Solve: x ÷ (5/4) = 8 Multiply both sides by 4/5: x = 8 × (4/5) = 32/5 = 6.4 or 6⅖ ✅ Final Answer: x = 6.4 --- 📝 Practice Questions: 1. x ÷ (3/4) = 12 2. x ÷ (1/2) = 10 3. x ÷ (5/6) = 18 4. x ÷ (2/5) = 7 5. x ÷ (4/7) = 14 --- ✅ Answers: 1. x = 12 × (4/3) = 16 2. x = 10 × (2/1) = 20 3. x = 18 × (6/5) = 21.6 4. x = 7 × (5/2) = 17.5 5. x = 14 × (7/4) = 24.5 --- 📚 Continue learning at: 🔗 Blog: https://easymathsteps.blogspot.com 🌐 Website: https://www.easymathsguid.com.ng

Multiplying Fractions in Equations

Now that we've solved equations with fractions, let’s learn how to solve equations where you need to multiply fractions to get the variable. --- ✏️ Concept: To solve equations like: (fraction) × x = value You need to multiply both sides of the equation by the reciprocal of the fraction to isolate x. > ✨ The reciprocal of a fraction is when you flip the numerator and denominator. --- 📘 Example 1: Solve: (2/3) × x = 6 To eliminate the fraction, multiply both sides by the reciprocal of 2/3, which is 3/2: x = 6 × (3/2) x = 18/2 = 9 ✅ Final Answer: x = 9 --- 📘 Example 2: Solve: (5/8) × x = 10 Multiply both sides by 8/5: x = 10 × (8/5) x = 80/5 = 16 ✅ Final Answer: x = 16 --- 📝 Practice Questions: 1. (3/4) × x = 9 2. (7/2) × x = 14 3. (4/5) × x = 20 4. (2/3) × x = 10 5. (9/10) × x = 18 --- ✅ Answers: 1. x = 12 2. x = 4 3. x = 25 4. x = 15 5. x = 20 --- 📘 Want more lessons? Visit us: 🔗 Blog: https://easymathsteps.blogspot.com 🌐 Website:https://www.easymathsguid.com.ng 

Solving Equations with Fractions on Both Sides

🧮 Example: Solve: (2x/3) − (1/6) = (x/2) + (1/3) --- 🔍 Step 1: Identify the Denominators The denominators are: 3, 6, 2, and 3 To simplify, we eliminate the fractions by multiplying all terms by the Least Common Multiple (LCM) of these numbers. --- ✏️ Step 2: Find the LCM Let’s list a few multiples: Multiples of 2: 2, 4, 6, 8... Multiples of 3: 3, 6, 9... Multiples of 6: 6, 12, 18... ✅ The smallest common multiple is 6 So the LCM = 6 --- ✏️ Step 3: Multiply Every Term by 6 Now apply this to the equation: 6 × (2x/3) − 6 × (1/6) = 6 × (x/2) + 6 × (1/3) Now simplify: 6 × (2x/3) = 4x 6 × (1/6) = 1 6 × (x/2) = 3x 6 × (1/3) = 2 Now rewrite the new equation: 4x − 1 = 3x + 2 --- ✏️ Step 4: Solve the New Equation Now solve like a regular linear equation: 4x − 1 = 3x + 2 Subtract 3x from both sides: x − 1 = 2 Add 1 to both sides: x = 3 --- ✅ Final Answer: x = 3 --- 💡 Quick Tip: When dealing with equations that include fractions: Always begin by finding the LCM of all denominators. Multiply eve...

Solving an Equation with Fractions

Solve: (1/2)x + (1/4) = 3/4 --- 🔍 Step 1: Understand the Problem This equation contains fractions, which makes it a bit harder to solve directly. To make it simpler, we will remove the fractions by using the LCM (Least Common Multiple) of the denominators. --- ✏️ Step 2: Find the LCM of the Denominators (2 and 4) Let’s list a few multiples: Multiples of 2: 2, 4, 6, 8, 10... Multiples of 4: 4, 8, 12... 👉 The LCM of 2 and 4 is 4 --- ✏️ Step 3: Multiply Every Term by the LCM Now multiply every term in the equation by 4 to remove the fractions: 4 × (1/2)x + 4 × (1/4) = 4 × (3/4) This simplifies to: 2x + 1 = 3 --- ✏️ Step 4: Solve the New Equation Now solve: 2x + 1 = 3 Subtract 1 from both sides: 2x = 2 Now divide both sides by 2: x = 1 ✅ Final Answer: x = 1 ---

Solving Equations with Brackets on Both Sides

🧮 Example: Solve: 2(x + 3) = 3(x - 1) --- ✏️ Step 1: Expand Both Sides Use the distributive property: Left side: 2(x + 3) = 2x + 6 Right side: 3(x - 1) = 3x - 3 Now your equation becomes: 2x + 6 = 3x - 3 --- ✏️ Step 2: Move Variables to One Side Subtract 2x from both sides: 2x - 2x + 6 = 3x - 2x - 3   6 = x - 3 --- ✏️ Step 3: Solve for x Add 3 to both sides: 6 + 3 = x - 3 + 3   9 = x --- ✅ Final Answer: x = 9 --- 💡 Quick Tip: 👉 Always expand brackets first 👉 Move all variable terms to one side 👉 Move numbers to the opposite side 👉 Solve carefully, step by step! --- 🔗 Follow for More Lessons: 🌐 Website: www.easymathsguid.com.ng 📘 Blog: easymathsteps.blogspot.com ---

Solving Equations with Brackets (Using the Distributive Property)

🧮 Example: Solve: 2(x + 3) = 14 --- ✏️ Step 1: Expand the Bracket Use the distributive property: Multiply 2 by x and 3: 2 × x = 2x   2 × 3 = 6 So the equation becomes: 2x + 6 = 14 --- ✏️ Step 2: Solve the Equation Now subtract 6 from both sides: 2x = 14 - 6   2x = 8 Divide both sides by 2: x = 8 ÷ 2   x = 4 --- ✅ Final Answer: x = 4 --- 💡 Quick Tip: Always expand the brackets first before solving the equation. Then follow the steps you've already learned: move constants, isolate the variable, and solve. --- 🔗 Follow Easymathsguid for More Lessons: 🌐 Website: www.easymathsguid.com.ng 📘 Blog: easymathsteps.blogspot.com

Solving Equations with Variables on Both Sides

🧮 Example: Solve: 3x + 4 = 2x + 9 --- ✏️ Step 1: Move variables to one side Subtract 2x from both sides: 3x - 2x + 4 = 2x - 2x + 9 x + 4 = 9 --- ✏️ Step 2: Move constants to the other side Subtract 4 from both sides: x + 4 - 4 = 9 - 4 x = 5 --- ✅ Final Answer: x = 5 --- 📝 Quick Tip: Always move all the x terms to one side and the numbers to the other before solving. Then simplify step-by-step. --- 🔗 Follow for more: 🌐 Website: www.easymath sguid.com.ng 📘 Blog: easymathsteps.blogspot.com

Solving Equations with Variables on Both Sides

In earlier lessons, we solved equations like: x + 3 = 7   But now we’ll learn how to solve when x appears on both sides of the equation. 🔹 Example 1: Solve: x + 2 = x + 5 Step 1: Subtract x from both sides: x + 2 − x = x + 5 − x   2 = 5 This is false → ❌ No solution --- 🔹 Example 2: Solve: 2x + 3 = x + 7 Step 1: Subtract x from both sides: 2x + 3 − x = x + 7 − x   x + 3 = 7 Step 2: Subtract 3 from both sides: x = 4 ✅ Answer: x = 4 --- 🔹 Example 3: Solve: 3x − 2 = 2x + 5 Step 1: Subtract 2x from both sides: x − 2 = 5 Step 2: Add 2 to both sides: x = 7 ✅ Answer: x = 7 --- ✨ Tip: Always move all x terms to one side and numbers to the other. --- ✅ Practice Questions: 1. 2x + 1 = x + 6   2. 3x − 4 = 2x + 3   3. 5x + 2 = 2x + 11   4. x + 7 = x + 2 📩 Drop your answers in the comments!

Solving Simple Equation in Algebra

**In this lesson, you’ll learn how to solve simple algebraic equations.**   That means finding the value of the variable (like `x` or `y`) that makes the equation true. --- ### 🔹 **What is an Equation?** An **equation** is like a balance. It has **two sides** and an **equal sign (=)** between them. > **Example:**   > `x + 3 = 7` This means:   "What number added to 3 gives 7?" --- ### 🔸 **Step-by-Step Method** Let’s solve this: **`x + 3 = 7`** ➡️ **Step 1:** Subtract 3 from both sides: x + 3 − 3 = 7 − 3   x = 4 ✅ So the answer is: **x = 4** --- ### 🔸 **Example 2:** **`y − 2 = 5`** Add 2 to both sides: y − 2 + 2 = 5 + 2   y = 7 ✅ So the answer is: **y = 7** --- ### 🔸 **Example 3:** **`a ÷ 2 = 6`** Multiply both sides by 2: a ÷ 2 × 2 = 6 × 2   a = 12 ✅ So the answer is: **a = 12** --- ### ✨ **Important Rule to Remember:** > **Whatever you do to one side of the equation,**   > do the **same to the other si...

What Are Variables in Algebra ?

 In mathematics, a **variable** is a letter (like x or y) that represents a number. The number is not always known — it can change — that's why we call it a “variable.” ### 💡 Example 1: If `x = 3`, then: x + 2 = 3 + 2 = 5 ### 💡 Example 2: If `y = 7`, then: y - 4 = 7 - 4 = 3 ### 🔍 Why Do We Use Variables? We use variables to: - Represent unknown values - Write equations - Solve math problems more easily ### 🧠 Remember: A variable is just a **placeholder** for a number. ### ✅ Practice: Try solving these: 1. If `x = 5`, what is `x + 3`? 2. If `y = 10`, what is `y - 6`? 3. If `a = 4`, what is `a × 2`? Post your answers in the comments! 👇

What is Algebra

 Algebra is a part of math where we use letters like x and y to represent numbers. For example: If x = 2, then x + 3 = 5 In this blog, I’ll teach you algebra step-by-step, using simple examples to help you understand. Stay with me, and math will become easier than ever!