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2-step x+

1

2x + 4 = 10

x = 3

1

7y + 5 = 12

y = 1

1

22a + 11 = 55

a = 2

1

9m + 12 = 15

m = 1/3

2-step x-

1

8w - 4 = 12

w = 2

1

5k - 3 = 2

k = 1

1

10h - 50 = 30

h = 8

1

14x - 14 = 14

k = 2

2-step /+

1

x/5 + 8 = 11

x = 15

1

g/7 + 12 = 22

g = 70

1

y/4 + 11 = 25

y = 56

1

z/11 + 25 = 30

z = 55

2-step /-

1

p/19 - 10 = 3

p = 247

1

s/8 - 12 = 8

s = 160

1

e/3 - 9 = 1

e = 30

1

x/25 - 25 = 25

x = 625

Evaluate expressions

1

3x + 5y when x = 2 and y = 7

41

1

8a - 9c when a = 7 and c = 10

-34

1

2x + 3y - 4z when x = 5, y = 4, and z = 3

10

1

6m - 8n - 3p + 12r when m = 2, n = 6, p = 12, r = 20

168