Equations with Rational Numbers

F

100

4f = 24

f=6

200

f - 23 = 48

f = 71

300

f + 2.65 = 10.7

f = 8.05

400

f x 2/3 = 9/10

f = 1 7/20

500

f - 1/4 = 2 1/6

f = 2 5/12

R

100

r/3 = 15

r = 45

200

r x 22 = 66

r = 3

300

2.5r = 15

r = 6

400

6r = 3/12

r = 1/24

500

r - 2 2/5 = 14 1/10

r = 16 1/2

N

100

n + 17 = 19

n = 2

200

n - 715 = 1,025

n = 1,740

300

n + 3.6 = 12.72

n = 9.12

400

n/32.6 = 12.8

n = 417.28

500

n - 8/15 = 3 2/5

n = 3 14/15

X

100

x - 5 = 20

x = 25

200

x + 25 = 25

x = 0

300

14x = 70

x = 5

400

14x = 2.8

x = 0.2

500

1/4 + x = 7/8

x = 5/8

Y

100

y x 3 = 21

y = 7

200

y - 19 = 52

y = 71

300

4.5y = 27.9

y = 6.2

400

2y/3 = 11/12

y = 1 3/8

500

y - 1 1/3 = 2 2/3

y = 4