3/9=4/n

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Solution for 3/9=4/n equation: 


D( n )

n = 0

n = 0

n = 0

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

3/9 = 4/n // - 4/n

3/9-(4/n) = 0

3/9-4*n^-1 = 0

-4*n^-1 = -1/3 // : -4

n^-1 = 1/12

-1 < 0

1/(n^1) = 1/12 // * n^1

1 = 1/12*n^1 // : 1/12

12 = n^1

n = 12

n = 12

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