90-3/n=30

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Solution for 90-3/n=30 equation: 


D( n )

n = 0

n = 0

n = 0

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

90-(3/n) = 30 // - 30

90-(3/n)-30 = 0

90-3*n^-1-30 = 0

-3*n^-1 = -60 // : -3

n^-1 = 20

-1 < 0

1/(n^1) = 20 // * n^1

1 = 20*n^1 // : 20

1/20 = n^1

n = 1/20

n = 1/20

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