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combining like terms and distributive property
Substitution
100

6x – 13 = 11

x= 4

100

3(2x - 9) = 3

x = 5

100

6m – 5m + 1

m+1

100

Evaluate when x=8

4x - 2

30

200

3x + 5 = 14

x= 3

200

3x + 4 + x + 2 = -30

x = -9

200

-6(4x - 5)

-24x + 30

200

Evaluate when m = 2

18/m + m

11

300

2x+13=−8

x= -42

300

2 +9(x-1) = 2

x = 1

300

9 -3d(6 + 9)

9 - 45d 

or 

-45d + 9

300

Evaluate when p = -5

p + 7 * 3

6

400

2x+5=10

x= 10

400

2(x + 3) + 1 = 31

x = 12

400

4(5f + 3) + 11

 20f + 23

400

Evaluate when a = 3 and b = 4

a - 3b + 2

-7

500

3x−6=−3



x= 9

500

2x - 1 +2(x - 1) = - 7

x = -1

500

3(5x - 2) + 9x - 4

24x - 10

500

Evaluate when x = 3

x2 - 4x

-3