12/13=84/n

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Solution for 12/13=84/n equation: 


D( n )

n = 0

n = 0

n = 0

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

12/13 = 84/n // - 84/n

12/13-(84/n) = 0

12/13-84*n^-1 = 0

-84*n^-1 = -12/13 // : -84

n^-1 = 1/91

-1 < 0

1/(n^1) = 1/91 // * n^1

1 = 1/91*n^1 // : 1/91

91 = n^1

n = 91

n = 91

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