Pre-Algebra Review

One Step Equations

10

X+7=15

x=8

20

y-9=4

y=13

30

9b= -27

b=-9

40

5/m=8 

m=40

50

k/3=7/9

k=7/3

Two Step Equations

10

3x+5=20

x=5

20

2y-7=11

y=9

30

12+4a=36

a=6

40

p/4-2=5

p=28

50

k/2+4=13/2

k=5

Order of Operations

10

6+3x4

18

20

(8+2)x5

50

30

5(4+6)-8

42

40

20-6x2

8

50

9+12 divided by (3x2)

11

Combine Like Terms

10

3x+5x

8x

20

7y-2y+y

6y

30

8+3n-5+2n

5n+3

40

5b+2-3b-10

2b-8

50

7+4c+6-c

3c+13

Distributive Property

10

3(x+4)

3x+12

20

-2(y+6)

-2y-12

30

7(n+3)-2n

5n+21

40

-5(2b-6)+3

-10b+33

50

4(x-2)-3(x+1)

x-11