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