-5/7d-1=-11/21

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Solution for -5/7d-1=-11/21 equation: 


d in (-oo:+oo)

(-5/7)*d-1 = -11/21 // + -11/21

(-5/7)*d-(-11/21)-1 = 0

(-5/7)*d+11/21-1 = 0

-5/7*d-10/21 = 0 // + 10/21

-5/7*d = 10/21 // : -5/7

d = 10/21/(-5/7)

d = -2/3

d = -2/3

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