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

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Solution for (5n-4)/(5n-20) equation: 


D( n )

5*n-20 = 0

5*n-20 = 0

5*n-20 = 0

5*n-20 = 0 // + 20

5*n = 20 // : 5

n = 20/5

n = 4

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

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

5*n-4 = 0 // + 4

5*n = 4 // : 5

n = 4/5

n = 4/5

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