(5x+15)/(6x+18)

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Solution for (5x+15)/(6x+18) equation: 


D( x )

6*x+18 = 0

6*x+18 = 0

6*x+18 = 0

6*x+18 = 0 // - 18

6*x = -18 // : 6

x = -18/6

x = -3

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

(5*x+15)/(6*x+18) = 0

5*x+15 = 0 // - 15

5*x = -15 // : 5

x = -15/5

x = -3

x in { -3} 

x belongs to the empty set

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