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Algebra Basics

· Examples

✏️ Worked Examples — Step by Step

E1
Easy

Solve: 4x − 7 = 17

💡 Add 7, divide by 4.

👁 Show Solution
4x = 24 → x = 6.

✅ Answer: x = 6
6
E2
Medium

Solve: 3(x + 2) = 21

💡 Distribute or divide first.

👁 Show Solution
x + 2 = 7 → x = 5.

✅ Answer: x = 5
5
E3
Challenging

Quadratic: x² − 7x + 12 = 0

💡 Factor into (x − a)(x − b).

👁 Show Solution
Find two numbers multiplying to 12 and adding to 7: 3 and 4.
(x − 3)(x − 4) = 0 → x = 3 or 4.

✅ Answer: x = 3 or x = 4
3 and 4