-7d-9=-6d-9

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Solution for -7d-9=-6d-9 equation: 


d in (-oo:+oo)

-7*d-9 = -6*d-9 // + -6*d-9

9-7*d-(-6*d)-9 = 0

6*d-7*d-9+9 = 0

-1*d = 0 // : -1

d = 0

d = 0

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