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x in (-oo:+oo)
x/7-6 > x/2 // - x/2
x/7-(x/2)-6 > 0
-5/14*x-6 > 0 // + 6
-5/14*x > 6 // : -5/14
x < 6/(-5/14)
x < -84/5
x in (-oo:-84/5)
(-oo:-84/5)
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