8+7d=57

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Solution for 8+7d=57 equation: 


d in (-oo:+oo)

7*d+8 = 57 // - 57

7*d-57+8 = 0

7*d-49 = 0 // + 49

7*d = 49 // : 7

d = 49/7

d = 7

d = 7

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