7/8=21/n

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Solution for 7/8=21/n equation: 


D( n )

n = 0

n = 0

n = 0

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

7/8 = 21/n // - 21/n

7/8-(21/n) = 0

7/8-21*n^-1 = 0

-21*n^-1 = -7/8 // : -21

n^-1 = 1/24

-1 < 0

1/(n^1) = 1/24 // * n^1

1 = 1/24*n^1 // : 1/24

24 = n^1

n = 24

n = 24

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