6d+7=7d+12

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Solution for 6d+7=7d+12 equation: 


d in (-oo:+oo)

6*d+7 = 7*d+12 // - 7*d+12

6*d-(7*d)-12+7 = 0

6*d-7*d-12+7 = 0

-d-5 = 0 // + 5

-d = 5 // * -1

d = -5

d = -5

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