12/20=18/n

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Solution for 12/20=18/n equation: 


D( n )

n = 0

n = 0

n = 0

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

12/20 = 18/n // - 18/n

12/20-(18/n) = 0

12/20-18*n^-1 = 0

-18*n^-1 = -3/5 // : -18

n^-1 = 1/30

-1 < 0

1/(n^1) = 1/30 // * n^1

1 = 1/30*n^1 // : 1/30

30 = n^1

n = 30

n = 30

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