7(-7d-8)=140

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Solution for 7(-7d-8)=140 equation: 


d in (-oo:+oo)

7*(-7*d-8) = 140 // - 140

7*(-7*d-8)-140 = 0

7*(-7*d-8)-140 = 0

-49*d-196 = 0

-49*d-196 = 0

-49*d-196 = 0 // + 196

-49*d = 196 // : -49

d = 196/(-49)

d = -4

d = -4

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