13/18=91/d

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Solution for 13/18=91/d equation: 


D( d )

d = 0

d = 0

d = 0

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

13/18 = 91/d // - 91/d

13/18-(91/d) = 0

13/18-91*d^-1 = 0

-91*d^-1 = -13/18 // : -91

d^-1 = 1/126

-1 < 0

1/(d^1) = 1/126 // * d^1

1 = 1/126*d^1 // : 1/126

126 = d^1

d = 126

d = 126

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