Single-Step Variable Equations

Addition

100

x + 7 = 20

x = 13

200

8 = y + 2

y = 6

300

15 = a + 10

a = 5

400

5 + b = 32

b = 27

500

28 + c = 50

c = 22

Subtraction

100

c - 3 = 4

c = 7

200

x - 4 = 33

x = 37

300

62 = x - 8

x = 70

400

a - 14 = 20

a = 34

500

78 = x - 22

x = 100

Multiplication

100

2x = 10

x = 5

200

21 = 3y

y = 7

300

48 = 6c

c = 8

400

12x = 144

x = 12

500

7x = 56

x = 8

Division

100

c ÷ 5 = 10

c = 50

200

x ÷ 2 = 7

x = 14

300

a ÷ 3 = 20

a = 60

400

6 = z ÷ 3

z = 18

500

12 = x ÷ 6

x = 72

Combining Like Terms

100

x + 2 + 3 = 10

x = 5

200

y - 4 - 2 = 14

y = 16

300

2x + 2x = 16

x = 4

400

y - (12 ÷ 2) = 24

y = 30

500

3x + 2x = 15 + 5

x = 4