4/n=5/7/30

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Solution for 4/n=5/7/30 equation: 


D( n )

n = 0

n = 0

n = 0

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

4/n = (5/7)/30 // - (5/7)/30

4/n-((5/7)/30) = 0

4/n-1/42 = 0

4*n^-1 = 1/42 // : 4

n^-1 = 1/168

-1 < 0

1/(n^1) = 1/168 // * n^1

1 = 1/168*n^1 // : 1/168

168 = n^1

n = 168

n = 168

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