8th Grade Equations Review

One-Step

100

x+6=9

X=3

200

m-2= -19

m= -17

300

-2x=32

x= -16

400

h/4=-3

h= -12

500

2/3 x= -20

x=-30

Two-Step

100

3b+4=19

b=5

200

-5y+7= -23

y=6

300

5x - 7x - 10 = -14

x=2

400

4(x-6)= -16

X=2

500

4/5 m +2= -6

m=-10

Variables on both sides

100

2x+5= 3x

x=5

200

5x+2= 3x-8

x=-5

300

12x+8= 3x+62

x=6

400

16-4x=7x+5

x=1

500

6(n+1)=8n-3(n-7)

n=15

Multi-Step Equations

100

7(x-2) - 4x=64

x=26

200

-(a-12)+4a= 9

a=-1

300

3(x+1)=5

x=2/3

400

-10 < 4x - 6 + 4

x>-2

500

4(2a+3)= -3(a-1)+31

a=2

Expressions

100

Factor using a GCF:  30xy - 12x

6x(5y-2)

200

3/5x + 7 - x + 3.2

-2/5x+10.2

300

5/6(12x + 18)

10x+15

400

4(x-6) -2(3x+3)

-2x - 30

500

Evaluate:   -3x - (-4xy - 2) when x=-2 and y =1/2

4