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

Front

Solve for x: x/3 + 10 = 15

Back

x = 15.

Front

Solve for y: -6 = 2y - 16

Back

y = 5.

Front

Solve for x: 9x + 10 = 91

Back

x = 9.

Front

Solve for x: 4x + 7 = 23

Back

x = 4.

Front

Solve for x: 7 + 7x = -14

Back

x = -3.

Front

What is the first step to solve the equation x/3 + 10 = 15?

Back

Subtract 10 from both sides.

Front

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

Back

To 'undo' an operation means to perform the opposite operation to isolate the variable.

Front

What is the solution to the equation 2y - 16 = -6?

Back

y = 5.