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39 + x = 41
x=


6 + x = 7
x=


1 + x = 1
x=


18 + x = 24
x=


14 + x = 41
x=


3 + x = 50
x=


1 + x = 45
x=


4 + x = 15
x=


1 + x = 1
x=


3 + x = 32
x=


7 - x = 4
x=


7 - x = 6
x=


31 - x = 28
x=


3 - x = 1
x=


23 - x = 3
x=


14 - x = 4
x=


4 - x = 2
x=


4 - x = 1
x=


2 - x = 2
x=


40 - x = 34
x=


x - 34 = 44
x=


x - 35 = 45
x=


x - 7 = 40
x=


x - 40 = 50
x=


x - 17 = 28
x=


x - 31 = 45
x=


x - 0 = 7
x=


x - 20 = 27
x=


x - 28 = 47
x=


x - 16 = 42
x=