d-3=2d-15

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Solution for d-3=2d-15 equation: 


d in (-oo:+oo)

d-3 = 2*d-15 // - 2*d-15

d-(2*d)-3+15 = 0

d-2*d-3+15 = 0

12-d = 0 // - 12

-d = -12 // * -1

d = 12

d = 12

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