8/5=20/n

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Solution for 8/5=20/n equation: 


D( n )

n = 0

n = 0

n = 0

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

8/5 = 20/n // - 20/n

8/5-(20/n) = 0

8/5-20*n^-1 = 0

-20*n^-1 = -8/5 // : -20

n^-1 = 2/25

-1 < 0

1/(n^1) = 2/25 // * n^1

1 = 2/25*n^1 // : 2/25

25/2 = n^1

n = 25/2

n = 25/2

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