20/30=10/n

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Solution for 20/30=10/n equation: 


D( n )

n = 0

n = 0

n = 0

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

20/30 = 10/n // - 10/n

20/30-(10/n) = 0

20/30-10*n^-1 = 0

-10*n^-1 = -2/3 // : -10

n^-1 = 1/15

-1 < 0

1/(n^1) = 1/15 // * n^1

1 = 1/15*n^1 // : 1/15

15 = n^1

n = 15

n = 15

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