9/n=21/14

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Solution for 9/n=21/14 equation: 


D( n )

n = 0

n = 0

n = 0

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

9/n = 21/14 // - 21/14

9/n-(21/14) = 0

9/n-3/2 = 0

9*n^-1 = 3/2 // : 9

n^-1 = 1/6

-1 < 0

1/(n^1) = 1/6 // * n^1

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

6 = n^1

n = 6

n = 6

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