Solving 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 for a: 20 = 2 - a

Back

a = -18

Front

Solve for a: 26 = 5a + 1

Back

a = 5

Front

Solve for a: -5 - 6a = -59

Back

a = 9

Front

Solve for a: -3a + 8 = 14

Back

a = -2

Front

Solve for a: 6 - 3a = 21

Back

a = -5

Front

What is the first step to solve the equation 20 = 2 - a?

Back

Subtract 2 from both sides to get 18 = -a.

Front

What is the inverse operation of addition?

Back

Subtraction is the inverse operation of addition.

Front

What is the inverse operation of multiplication?

Back

Division is the inverse operation of multiplication.