Mixed Practice Solving Equations

Practice

Solve. Check.

1a. a + (-5) = 8+5 +5

a = 13

1b. r - 9 = 13 + 9 + 9

r = 22

Solve. Check.

1c. y = 52

•2 • 2 y = 10

1d. 3m = 9 ÷ 3 ÷3

m = 3

Solve. Check.

3a. s + 6 = 0 -6 -6

s = -6

3b. z - 6 = -3 + 6 + 6

z = 3

Solve. Check.

3c. -d = -93

•-3 •-3 d = 27

3d. -x = 4 ÷-1 ÷-1

x = -4

Solve. Check.

5a. w - 18 = 27 +18 +18

w = 45

5b. 9m = 12 ÷9 ÷9

m = 12/9 = 4/3

Solve. Check.

5c. s = 54

•4 •4 s = 20

5d. b + 12 = 11 -12 -12

x = -1

Solving Two-Step Equations

Solve. Check.

1a. 3x - 5 = 16

+5 + 5 3x = 21

÷3 ÷3

x = 7

Solve. Check.

1b. -14r - 7 = 49

+7 + 7 -14r = 56

÷-14 ÷-14

r = -4

Solve. Check.

1c. 25a - 4 = 96

+4 +4 25a = 100

÷25 ÷25

a = 4

Solve. Check.

1d. 60y - 7 = 173

+7 +7

60y = 180

÷60 ÷60

y = 3

Solve. Check.

3a. 8a - 7 = 65

+7 +7

8a = 72

÷8 ÷8

a = 9

Solve. Check.

3b. 23y + 6 = 75

-6 -6

23y = 69

÷23 ÷23

y = 3

Solve. Check.

3c. 52x + 4 = -100

-4 -4

52x = -104

÷52 ÷52

x = -2

Solve. Check.

3d. -6z + 15 = 3

-15 - 15

-6z = -12

÷-6 ÷-6

z = 2