500/20=300/n

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Solution for 500/20=300/n equation: 


D( n )

n = 0

n = 0

n = 0

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

500/20 = 300/n // - 300/n

500/20-(300/n) = 0

500/20-300*n^-1 = 0

-300*n^-1 = -25 // : -300

n^-1 = 1/12

-1 < 0

1/(n^1) = 1/12 // * n^1

1 = 1/12*n^1 // : 1/12

12 = n^1

n = 12

n = 12

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