27/n=90/70

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Solution for 27/n=90/70 equation: 


D( n )

n = 0

n = 0

n = 0

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

27/n = 90/70 // - 90/70

27/n-(90/70) = 0

27/n-9/7 = 0

27*n^-1 = 9/7 // : 27

n^-1 = 1/21

-1 < 0

1/(n^1) = 1/21 // * n^1

1 = 1/21*n^1 // : 1/21

21 = n^1

n = 21

n = 21

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