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x in (-oo:+oo)
(2*x)/3-(1/6) > (5*x)/12 // - (5*x)/12
(2*x)/3-((5*x)/12)-(1/6) > 0
(2*x)/3+(-5/12)*x-1/6 > 0
1/4*x-1/6 > 0 // + 1/6
1/4*x > 1/6 // : 1/4
x > 1/6/1/4
x > 2/3
x in (2/3:+oo)
(2/3:+oo)
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