4/20=10/n

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Solution for 4/20=10/n equation: 


D( n )

n = 0

n = 0

n = 0

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

4/20 = 10/n // - 10/n

4/20-(10/n) = 0

4/20-10*n^-1 = 0

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

n^-1 = 1/50

-1 < 0

1/(n^1) = 1/50 // * n^1

1 = 1/50*n^1 // : 1/50

50 = n^1

n = 50

n = 50

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