(2n-8)/(n-4)

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Solution for (2n-8)/(n-4) equation: 


D( n )

n-4 = 0

n-4 = 0

n-4 = 0

n-4 = 0 // + 4

n = 4

n in (-oo:4) U (4:+oo)

(2*n-8)/(n-4) = 0

2*n-8 = 0 // + 8

2*n = 8 // : 2

n = 8/2

n = 4

n in { 4} 

n belongs to the empty set

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