Linear Equations

Overview

A linear equation is an equation where the highest power of the variable is 1.

Standard Form

ax + b = 0 (where a ≠ 0)

Steps to Solve

1. Move constants to the other side
2. Divide by the coefficient of x
3. Check your answer by substitution

Example

Solve: 2x + 3 = 7

1. 2x = 7 − 3
2. 2x = 4
3. x = 2

Key Points

• Whatever you do on one side, do the same on the other side.
• Keep equations balanced.