(18+2x)/(-3+x)=-4

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Solution for (18+2x)/(-3+x)=-4 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+18)/(x-3) = -4 // + 4

(2*x+18)/(x-3)+4 = 0

(2*x+18)/(x-3)+(4*(x-3))/(x-3) = 0

4*(x-3)+2*x+18 = 0

6*x+6 = 0

(6*x+6)/(x-3) = 0

(6*x+6)/(x-3) = 0 // * x-3

6*x+6 = 0

6*x+6 = 0 // - 6

6*x = -6 // : 6

x = -6/6

x = -1

x = -1

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