-45=7d-3d-9

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Solution for -45=7d-3d-9 equation: 


d in (-oo:+oo)

-45 = 7*d-(3*d)-9 // - 7*d-(3*d)-9

3*d-(7*d)-45+9 = 0

3*d-7*d-45+9 = 0

-4*d-36 = 0 // + 36

-4*d = 36 // : -4

d = 36/(-4)

d = -9

d = -9

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