d/-7=7

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Solution for d/-7=7 equation: 


d in (-oo:+oo)

d/(-7) = 7 // - 7

d/(-7)-7 = 0

-1/7*d-7 = 0 // + 7

-1/7*d = 7 // : -1/7

d = 7/(-1/7)

d = -49

d = -49

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