4-5d-7d=100

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Solution for 4-5d-7d=100 equation: 


d in (-oo:+oo)

4-(5*d)-(7*d) = 100 // - 100

4-(5*d)-(7*d)-100 = 0

4-5*d-7*d-100 = 0

-12*d-96 = 0 // + 96

-12*d = 96 // : -12

d = 96/(-12)

d = -8

d = -8

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