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 y: 15 - 3y = 30

Back

y = -5

Front

Solve for x: x/10 + 8 = 12

Back

x = 40

Front

Solve for x: 2x - 20 = 150

Back

x = 85

Front

Solve for k: 10 + 5k = 60

Back

k = 10

Front

Solve for x: 40 = x/2 + 5

Back

x = 70

Front

What is the first step to solve the equation 3x + 4 = 19?

Back

Subtract 4 from both sides to get 3x = 15.

Front

What is the second step to solve the equation 3x = 15?

Back

Divide both sides by 3 to get x = 5.

Front

What does it mean to perform the inverse operation?

Back

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