12/18=30/n

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Solution for 12/18=30/n equation: 


D( n )

n = 0

n = 0

n = 0

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

12/18 = 30/n // - 30/n

12/18-(30/n) = 0

12/18-30*n^-1 = 0

-30*n^-1 = -2/3 // : -30

n^-1 = 1/45

-1 < 0

1/(n^1) = 1/45 // * n^1

1 = 1/45*n^1 // : 1/45

45 = n^1

n = 45

n = 45

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