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 reverse order: first undo addition or subtraction, then undo multiplication or division.

Front

Solve for x: 4x + 22 = -34

Back

x = -14

Front

Solve for x: -3x - 12 = 15

Back

x = -9

Front

Solve for d: 2d + 7 = 9

Back

d = 1

Front

Solve for t: -5t + 9 = 24

Back

t = -3

Front

Solve for x: x/3 + 5 = -1

Back

x = -18

Front

What is the first step to solve the equation 3x + 6 = 15?

Back

Subtract 6 from both sides to get 3x = 9.

Front

What is the second step to solve the equation 3x = 9?

Back

Divide both sides by 3 to get x = 3.

Front

What does it mean to 'undo' an operation in solving equations?

Back

'Undoing' an operation means performing the opposite operation to isolate the variable.