13/9=8/d

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Solution for 13/9=8/d equation: 


D( d )

d = 0

d = 0

d = 0

d in (-oo:0) U (0:+oo)

13/9 = 8/d // - 8/d

13/9-(8/d) = 0

13/9-8*d^-1 = 0

-8*d^-1 = -13/9 // : -8

d^-1 = 13/72

-1 < 0

1/(d^1) = 13/72 // * d^1

1 = 13/72*d^1 // : 13/72

72/13 = d^1

d = 72/13

d = 72/13

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