3/n-3=12

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Solution for 3/n-3=12 equation: 


D( n )

n = 0

n = 0

n = 0

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

3/n-3 = 12 // - 12

3/n-12-3 = 0

3*n^-1 = 15 // : 3

n^-1 = 5

-1 < 0

1/(n^1) = 5 // * n^1

1 = 5*n^1 // : 5

1/5 = n^1

n = 1/5

n = 1/5

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