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100

y + 4 = 10

y = 6

100

f - 20 = 33

f = 53

100

5x = 25

x = 5

100

8/a = 4

a = 32

100

v + 14 = 37

v = 23

200

12 + x = 36

x = 24

200

g - 11 = 48

g = 59

200

8y = 48

y = 6

200

10/b = 5

b = 50

200

s - 12 = 20

s = 32

300

b + 14 = 52

b = 38

300

15 - h = 20

h = -5

300

10d = 70

d = 7

300

7/m = 10

m = 70

300

11f = 33

f = 3

400

8 + m = 20

m = 12

400

k - 7 = 30

k = 37
400

9p = 63

p = 7

400

5/j = 15

j = 75

400

5/g = 10

g = 50

500

s + 41 = 51

s = 10

500

22 - n = 34

n = -12

500

4t = 24

t = 6

500

2/a = 14

a = 28

500

r + 23 = 41

r = 18