-7-7d-3d=-97

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Solution for -7-7d-3d=-97 equation: 


d in (-oo:+oo)

-(7*d)-(3*d)-7 = -97 // + 97

97-(7*d)-(3*d)-7 = 0

97-7*d-3*d-7 = 0

90-10*d = 0 // - 90

-10*d = -90 // : -10

d = -90/(-10)

d = 9

d = 9

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