3.7-3.10 Review Math 8

Two Step Equations

100

3x-5 = 10

x=5

200

4x+6=2

x=-1

300

-4m+7=-5

m=3

Combine Like Terms

100

12n+7n-4=34

n=2

200

11e-e+2=22

e=2

300

7r+3.5-5r=9.5

r=3

Grouping Symbols

100

(u-6)/4 = 9

u = 42

200

5(t+4)=15

t=7

300

(5n-6)/9+1 =12

n=21

Fractions and Decimals

100

(k-2)/4 = (3k+1)/4

k = -1.5 or 

-3/2

200

3.5= -0.003p -1.09

p=-1530

300

2.1n - 0.3 = 1.4n + 18

n = 3