3/(3n-9)

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Solution for 3/(3n-9) equation: 


D( n )

3*n-9 = 0

3*n-9 = 0

3*n-9 = 0

3*n-9 = 0 // + 9

3*n = 9 // : 3

n = 9/3

n = 3

n in (-oo:3) U (3:+oo)

3/(3*n-9) = 0

n belongs to the empty set

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