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D( x )
3*x+6 = 0
4*x+8 = 0
3*x+6 = 0
3*x+6 = 0
3*x+6 = 0 // - 6
3*x = -6 // : 3
x = -6/3
x = -2
4*x+8 = 0
4*x+8 = 0
4*x+8 = 0 // - 8
4*x = -8 // : 4
x = -8/4
x = -2
x in (-oo:-2) U (-2:+oo)
2/(3*x+6)+3/(4*x+8) = 0
(2*(4*x+8))/((3*x+6)*(4*x+8))+(3*(3*x+6))/((3*x+6)*(4*x+8)) = 0
2*(4*x+8)+3*(3*x+6) = 0
17*x+34 = 0
(17*x+34)/((3*x+6)*(4*x+8)) = 0
(17*x+34)/((3*x+6)*(4*x+8)) = 0 // * (3*x+6)*(4*x+8)
17*x+34 = 0
17*x+34 = 0 // - 34
17*x = -34 // : 17
x = -34/17
x = -2
x in { -2}
x belongs to the empty set
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