Understanding Two-Step Equations

Front

Two-step equation

Back

An equation that requires two operations to solve.

Front

Solve: 2x + 3 = 11

Back

x = 4

Front

First step in solving 3x - 5 = 10

Back

Add 5 to both sides.

Front

Second step in solving 3x - 5 = 10

Back

Divide both sides by 3.

Front

Common mistake: 2x + 3 = 11

Back

Forgetting to subtract 3 first.

Front

Key term: Variable

Back

A symbol, usually a letter, representing an unknown number.

Front

Solve: 5x - 7 = 18

Back

x = 5

Front

First step in solving 4x + 9 = 25

Back

Subtract 9 from both sides.

Front

Second step in solving 4x + 9 = 25

Back

Divide both sides by 4.

Front

Common mistake: 3x + 4 = 19

Back

Dividing before subtracting 4.