42/n=6

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Solution for 42/n=6 equation: 


D( n )

n = 0

n = 0

n = 0

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

42/n = 6 // - 6

42/n-6 = 0

42*n^-1 = 6 // : 42

n^-1 = 1/7

-1 < 0

1/(n^1) = 1/7 // * n^1

1 = 1/7*n^1 // : 1/7

7 = n^1

n = 7

n = 7

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