Mid Unit Test Solving Equations

An inverse operation is

• reversing the sign in an inequality

• using the opposite operation to solve equations

•  A number’s distance from zero

One difference between equations and expressions would be...

• you solve both of them using inverse operations.

• you flip the symbol when you multiply or divide by a negative

• equations have an equals because they show two equal expressions. Expresions have terms and operations.

Choose the first step in solving the following equation.
-3y - 12 = 14

• add 3 from both sides

• add 12 to both sides

• subtract 12 from both sides

Solve:
19  +  a  =  –40

• –950

• –59

• –31

• 2.6

Mathematical Equivalence

ON

• A

• B

• C

• D

Solve the equation modeled above.

• -2

• 6

• -6

• 2

Mathematical Equivalence

ON

Mathematical Equivalence

ON

What value of x makes the equation true?

• 1

• 7

• -5

• -1