20/n=5/7/4

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Solution for 20/n=5/7/4 equation: 


D( n )

n = 0

n = 0

n = 0

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

20/n = (5/7)/4 // - (5/7)/4

20/n-((5/7)/4) = 0

20/n-5/28 = 0

20*n^-1 = 5/28 // : 20

n^-1 = 1/112

-1 < 0

1/(n^1) = 1/112 // * n^1

1 = 1/112*n^1 // : 1/112

112 = n^1

n = 112

n = 112

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