Two Step Equations

Front

What is a two-step equation?

Back

A two-step equation is an algebraic equation that requires two operations to solve for the variable.

Front

How do you isolate a variable in a two-step equation?

Back

To isolate a variable, perform the inverse operations in the reverse order of how they are applied.

Front

Solve: x/5 - 13 = 20

Back

x = 165

Front

Solve: 2s - 4 = 6

Back

s = 5

Front

Solve: 11 = 3z + 5

Back

z = 2

Front

Solve: -5t + 9 = 24

Back

t = -3

Front

Solve: x/4 + 11 = 20

Back

x = 36

Front

What is the first step to solve the equation x/5 - 13 = 20?

Back

Add 13 to both sides of the equation.

Front

What is the second step to solve the equation 2s - 4 = 6?

Back

Add 4 to both sides, then divide by 2.

Front

What does it mean to perform the inverse operation?

Back

An inverse operation reverses the effect of the original operation (e.g., addition is the inverse of subtraction).