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4 - x = 2

10 + c = 21

d + 1 = 6

8 = 7 + p

10 = 4 + x

4 = x - 5

3 + x = 5

13 + e = 16

19 = d + 7

c = 11

x = 2

x = 2

d = 5

d = 12

e = 3

x = 9

x = 6

p = 1