Expressions and Equations

Distribute

100

5(2x+1)

10x +5

200

10(10m+3)

100m +30

300

-7(23k - 18) 

-161k + 126

400

-5(-7y-8)

35y+40

500

(-2 - 6x)10

-20-60x  or -60x-20

Combine Like Terms

100

What 2 things must match to consider it a "like term"

variable and exponent

200

6k - 4y + 4k +6y

10k + 2y

300

-7m -8 +12 + 8m² + 10m 

8m^2 + 3m + 4

400

-6k -8 + 23k - 32

17k-40

500

-4m² + 6 -9m² -7m -10

-13m²  - 7m -4

1-step

100

m-378= 210

m=588

200

-24r=312

r=-13

300

55= -10 + 5x

13

400

-14m= -266

m=19

500

x/9 = 43

387

2-Step

100

10m + 6= 206

m = 20

200

5m - 30 =220

m = 50

300

x/11-9=0

x=99

400

 k/4-10=-4

k=24

500

28x-7=1057

x=38

Variables on Both sides

100

3+5n=2n+15

n=4

200

7x-10=4x+5

x=5

300

9m-10=6m-1

m=3

400

38+7k=8(k+4)

k=6

500

4n-40=7(-2n+2)

n=3