Solving Two-Step Equations Models

-x + 9 = 17

• 8

• -8

• 26

• -26

Mary says the first step to solve 3 - 2x = 13 is to add 3. Is Mary correct or incorrect?

• Correct

• Incorrect

3 - 2x = 13

• -8

• 8

• 5

• -5

In order to join a gym, Mary must pay $75 and a monthly fee of $20. She has paid a total of $215 What equation would represent this?

• 20 + 75x = 215

• 75 + 20x = 215

• 215x = 75 + 20x

• 215 x = 75x + 20

Mathematical Equivalence

ON

What value of X makes this equation true?

• x=4

• x=1

• x=7

• x=2

What is the solution for this equation?

• x= -2

• x=4

• x=10

• x=2

DRAW THIS MODEL ON YOUR PAPER TO SOLVE

• A

• B

• C

• D

Mathematical Equivalence

ON

What equation does Gabriel's model represent and what is the value of x?

• 15 = 3x + 3; x =6

• 15 = 3x + 3; x = 4

• 15 = 3x - 3; x = 6

• 15 = 3x - 3; x = 4