PA: 4.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

When solving a two-step equation, which operation do you undo first?

Back

You always undo the addition or subtraction first.

Front

What is the first step to solve the equation 3x - 7 = 32?

Back

Add 7 to both sides of the equation.

Front

What is the solution to the equation 4x + 7 = 23?

Back

x = 4.

Front

How do you isolate the variable in the equation 9 - 2x = 17?

Back

Rearrange to -2x + 9 = 17 and then solve for x.

Front

What is the value of x in the equation 3x - 7 = 32?

Back

x = 13.

Front

If Paul the Plumber charges $20 for travel and $45 per hour, how much does he charge for 3 hours?

Back

$155.

Front

What is the inverse operation of addition?

Back

Subtraction.

Front

What is the inverse operation of subtraction?

Back

Addition.

Front

In the equation 2x + 9 = 17, what is the first step to solve for x?

Back

Subtract 9 from both sides.