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6 + x = 20
x=


50 + x = 9
x=


14 + x = 45
x=


15 + x = 25
x=


4 + x = 21
x=


38 + x = 13
x=


35 + x = 5
x=


29 + x = 29
x=


3 + x = 46
x=


35 + x = 3
x=


23 - x = 19
x=


39 - x = 37
x=


19 - x = 13
x=


16 - x = 32
x=


45 - x = 49
x=


46 - x = 14
x=


4 - x = 4
x=


13 - x = 49
x=


17 - x = 38
x=


13 - x = 38
x=


x - 25 = 41
x=


x - 45 = 25
x=


x - 4 = 10
x=


x - 5 = 23
x=


x - 25 = 6
x=


x - 29 = 40
x=


x - 28 = 45
x=


x - 13 = 15
x=


x - 31 = 41
x=


x - 35 = 45
x=