Solving equation

One-Step A/S

100

x + 9 = 12

x = 3

200

s – 1 = 10

s = 11

300

3 = z – 11

z = 14

400

5 + y = 7

y = 2

500

8 = 2 + q

q = 6

One-Step M/D

100

3x = 36

x = 12

200

Y/9=3

y = 27

300

5p = 25

p = 5

400

14 = a/2

a = 28

500

r/8= 4

r = 32

Two-Step

100

9c + 1 = 10

c = 1

200

6y – 5 = 7

y = 2

300

8 = 3a – 4

a = 4

400

13 + 7x = 27

x = 2

500

42 + 5t = 8t

t = 14

Proportions

100

10/8=n/10

12.5

200

7/5=x/3

4.2

300

9/6=x/10

15

400

7/n=8/7

6.13

500

4/3=8/x

6