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x in (-oo:+oo)
3*x = (4*x-6)/2 // - (4*x-6)/2
3*x-((4*x-6)/2) = 0
(-1*(4*x-6))/2+3*x = 0
(-1*(4*x-6))/2+(2*3*x)/2 = 0
2*3*x-1*(4*x-6) = 0
2*x+6 = 0
(2*x+6)/2 = 0
(2*x+6)/2 = 0 // * 2
2*x+6 = 0
2*x+6 = 0 // - 6
2*x = -6 // : 2
x = -6/2
x = -3
x = -3
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