3/7=12/n

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Solution for 3/7=12/n equation: 


D( n )

n = 0

n = 0

n = 0

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

3/7 = 12/n // - 12/n

3/7-(12/n) = 0

3/7-12*n^-1 = 0

-12*n^-1 = -3/7 // : -12

n^-1 = 1/28

-1 < 0

1/(n^1) = 1/28 // * n^1

1 = 1/28*n^1 // : 1/28

28 = n^1

n = 28

n = 28

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