2/5=10/n

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Solution for 2/5=10/n equation: 


D( n )

n = 0

n = 0

n = 0

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

2/5 = 10/n // - 10/n

2/5-(10/n) = 0

2/5-10*n^-1 = 0

-10*n^-1 = -2/5 // : -10

n^-1 = 1/25

-1 < 0

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

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

25 = n^1

n = 25

n = 25

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