7-7d+4d=-8

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Solution for 7-7d+4d=-8 equation: 


d in (-oo:+oo)

4*d-(7*d)+7 = -8 // + 8

4*d-(7*d)+7+8 = 0

4*d-7*d+7+8 = 0

15-3*d = 0 // - 15

-3*d = -15 // : -3

d = -15/(-3)

d = 5

d = 5

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