Basic Equations and Like Terms Review

One-Step Equations

100

14=5+x

x=9

200

x-20=-5

x=15

300

-30=10x

x=-3

400

x/9=8

x=72

500

-3/5w=-3

w=5

Two-Step Equations

100

-49=2c-29

c=-10

200

42=42+9b

b=0

300

3c+2=-10

c=-4

400

6+a/2=28

a=44

500

7+2/11z=13

z=33

Combining Like Terms

100

3x+7y+12x

15x+7y

200

9c+4-3a+6

-3a+9c+10

300

-5b-7-4b-9

-9b-16

400

-4c+5-2a+6c-1+2a

2c+4

500

3x-4y+2-7+5x-2y

8x-6y-5

Mixed Review

100

9w=-36

w=-4

200

When writing an expression, separate terms with ...

+ signs

300

2 or more terms that share a variable are called...

Like Terms

400

Write the following expression in the correct order:

-17g+12f-8+12h

12f-17g+12h-8

500

7/12x+3=52

x=84

Vocabulary

100

A letter that replaces an unknown number value.

Variable

200

Mathematical term for opposite operations

Inverse Operations

300

Mathematical term for an opposite fraction 

Reciprocal 

400

The number that is attached to the front of a variable

Coefficient 

500

A number without a variable

Constant