Pre-algebra equations

Multi-step equations

100

8a + 4a= 144

a=12

200

23 -7(x+3) +5x =10

x =-4

300

3(n-2) = 36

n=14

400

16 = 2(x-1) - x

x=18

500

8 - 3( x - 4 ) = 4 

x = 5 1/3

Multi-step fractions

100

5/8 c - 8 = 12

c=12

200

3/4 (b + 8) = 15

b=12

300

-1/8 = 7/4 + 3/2 z

-1 1/4

400

1/4 x - 3/2 x = 1/2

x=-2/5

500

(e + 4)/3 = 2/9

-3 1/3

Multi-step decimals

100

-0.8k -3.1 =-8.3

k = 6.5

200

-9.5r + 5 -4 = -30.5

r = 3.32

300

6.5d+3 -4d =-19.5

d= -9

400

19.5 = 6 + 6.5(k-5)

k = 7.08

500

-24.5-3b=-6(5.5b-7)

b = 2.22

variables on both sides

100

-3x -3 = 2x -83 

x=16

200

12x - 28= -63 + 7x

x= -7

300

4(5 - 3b)=4(b+1)

b = 1

400

-9x+15=-22-4(x+12)

x=17

500

4(3x +7) +3 + 2x = 5x + 8(2+x)

x = -15