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D( x )
x+2 = 0
x+2 = 0
x+2 = 0
x+2 = 0 // - 2
x = -2
x in (-oo:-2) U (-2:+oo)
6/(x+2) = 3/4 // - 3/4
6/(x+2)-(3/4) = 0
6/(x+2)-3/4 = 0
(4*6)/(4*(x+2))+(-3*(x+2))/(4*(x+2)) = 0
4*6-3*(x+2) = 0
18-3*x = 0
(18-3*x)/(4*(x+2)) = 0
(18-3*x)/(4*(x+2)) = 0 // * 4*(x+2)
18-3*x = 0
18-3*x = 0 // - 18
-3*x = -18 // : -3
x = -18/(-3)
x = 6
x = 6
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