-3d+8=20 - solution

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Solution for -3d+8=20 equation:

d in (-oo:+oo)

8-3*d = 20 // - 20

8-3*d-20 = 0

-3*d-12 = 0 // + 12

-3*d = 12 // : -3

d = 12/(-3)

d = -4

d = -4

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