Solving Equations

Adding

100

x + 12 = 14

x = 2

200

11 + x = 15

x = 4

300

x + 6 = 14

x = 8

400

3.5 + x = 16

x = 12.5

500

1/2 + x = 3

x = 2 1/2

Subtracting

100

10 - x = 7

x = 3

200

x - 3 = 8

x = 11

300

x - 10 = 2

x = 12

400

x - 5 = 1.75

x = 6.75

500

2 1/2 - x = 1

x = 1 1/2

Multiplying

100

3x = 12

x = 4

200

5x = 45

x = 9

300

10x = 110

x = 11

400

2.5x = 15

x = 6

500

4/5x = 20

x = 25

Dividing

100

x/9 = 8

x = 72

200

x/7 = 12

x = 84

300

81/x = 9

x = 9

400

x/0.25 = 4

x = 1

500

5/x = 1/2

x = 10

2 Step

100

10x - 76 = 754

x = 83

200

14y - 19 = 499

y = 37

300

2,528 ‒ 72y = 8

y = 35

400

77 + 82x = 7,867

x = 95

500

73 + 15x = 343

x = 18