3/10=7/n

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Solution for 3/10=7/n equation: 


D( n )

n = 0

n = 0

n = 0

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

3/10 = 7/n // - 7/n

3/10-(7/n) = 0

3/10-7*n^-1 = 0

-7*n^-1 = -3/10 // : -7

n^-1 = 3/70

-1 < 0

1/(n^1) = 3/70 // * n^1

1 = 3/70*n^1 // : 3/70

70/3 = n^1

n = 70/3

n = 70/3

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