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x in (-oo:+oo)
1/2 > 2*x-3 // - 2*x-3
1/2-(2*x)+3 > 0
1/2-2*x+3 > 0
7/2-2*x > 0 // - 7/2
-2*x > -7/2 // : -2
x < -7/2/(-2)
x < 7/4
x in (-oo:7/4)
(-oo:7/4)
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