2/7-8n/(n-2)

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Solution for 2/7-8n/(n-2) equation: 


D( n )

n-2 = 0

n-2 = 0

n-2 = 0

n-2 = 0 // + 2

n = 2

n in (-oo:2) U (2:+oo)

2/7-((8*n)/(n-2)) = 0

2/7-8*n*(n-2)^-1 = 0

(-8*n)/(n-2)+2/7 = 0

(-8*7*n)/(7*(n-2))+(2*(n-2))/(7*(n-2)) = 0

2*(n-2)-8*7*n = 0

-54*n-4 = 0

(-54*n-4)/(7*(n-2)) = 0

(-54*n-4)/(7*(n-2)) = 0 // * 7*(n-2)

-54*n-4 = 0

-54*n-4 = 0 // + 4

-54*n = 4 // : -54

n = 4/(-54)

n = -2/27

n = -2/27

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