Module 3 Review

Distributive Property

100

a(b+c)

ab+ac

200

2(x+2)

2x+4

300

5(-x-7)

20x+35

400

12(6x-8-3x)

36x-96

500

-7(-11x+8)+10

77x-46

Multistep Equations

100

6(a − 7) = −7(a − 7)

a=7

200

5x-6.6=19.9

x=5.3

300

(1/2)x -10=20

x=60

400

−5(−4r − 6) = 5(6 − r)

r=0

500

−7(4x + 7) = 3 + 4(−4 − 6x)

-9

Two-step Distributive Equations

100

2(x+3)=10

x=2

200

5(x+9)=15

x=-6

300

3(-x-4)=9

x=-7

400

(1/2)(x+10)=8

x=6

500

-12(-5x-8)=-84

x=-3

How many?

100

How many solutions? 

7=6-4r+4r

No solution

200

How many solutions? 208=8(1+5x)

One solution x=5

300

How many solutions? 267=5(8n+4)+7

One solution n=6

400

How many solutions? -5(x-1)=5-5x

Infinite Solutions 

500

How many solutions? 93+12m=3(4m-1)+96

Infinite solutions

Random

100

A letter used to represent an unknown number

Variable

200

What are the four basic operations?

addition, subtraction, multiplication, and division

300

What is the constant in this expression 39+6x-x?

39

400

A number right in front of a variable

Coefficient

500

What are the like terms in this expression

                  4.8a+z+9p-z

+z and -z