(2X-20)/(X-3)

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Solution for (2X-20)/(X-3) equation: 


D( X )

X-3 = 0

X-3 = 0

X-3 = 0

X-3 = 0 // + 3

X = 3

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

(2*X-20)/(X-3) = 0

2*X-20 = 0 // + 20

2*X = 20 // : 2

X = 20/2

X = 10

X = 10

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