← Section 4 Chapter 42: Introduction to Algebra Chapter 43 →

Chapter 42: Introduction to Algebra

✏️ Explanation

Algebra uses symbols (usually letters) to represent unknown values.

🔍 Why It Matters

It's the foundation of higher maths and real-world problem solving.

📌 Visual Flowchart

🧭 See chart: "Algebra Basics Map" (to be added)

✏️ Worked Example

If x + 5 = 10, then x = ?
Solution: Subtract 5 from both sides
x = 10 - 5 = 5

🧮 Algebra Solver

x + =
Solution:
x = 5
Working: x = 10 - 5 = 5

🔢 Practice Exercises

1. Solve x + 7 = 12
x =
2. Solve x – 3 = 4
x =
3. If x + 6 = 10, what is x?
x =
4. Solve x/2 = 6
x =
5. What is x if 3x = 15?
x =

⚠️ Common Mistakes

  • Forgetting to do the inverse operation
  • Ignoring order of operations

✨ Quick Summary

Use algebra to find unknowns. Balance both sides like a scale.