2-Step Equations

Front

What is a 2-step equation?

Back

A 2-step equation is an algebraic equation that requires two operations to solve for the variable.

Front

How do you isolate a variable in a 2-step equation?

Back

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

Front

Solve for x: 3x - 9 = 15

Back

x = 8

Front

Solve for y: 15 - 3y = 30

Back

y = -5

Front

Solve for k: 18k = 171

Back

k = 9.5

Front

Solve for x: 40 = x/2 + 5

Back

x = 70

Front

Solve for k: 2k - 8 = 18

Back

k = 13

Front

What is the first step to solve the equation 3x - 9 = 15?

Back

Add 9 to both sides of the equation.

Front

What does it mean to perform the inverse operation?

Back

An inverse operation reverses the effect of the original operation, such as addition and subtraction or multiplication and division.

Front

If you have the equation x/2 + 5 = 40, what is the first step to isolate x?

Back

Subtract 5 from both sides of the equation.