4/15=9/n

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Solution for 4/15=9/n equation: 


D( n )

n = 0

n = 0

n = 0

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

4/15 = 9/n // - 9/n

4/15-(9/n) = 0

4/15-9*n^-1 = 0

-9*n^-1 = -4/15 // : -9

n^-1 = 4/135

-1 < 0

1/(n^1) = 4/135 // * n^1

1 = 4/135*n^1 // : 4/135

135/4 = n^1

n = 135/4

n = 135/4

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