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y in (-oo:+oo)
-2/3 > (2*y)/3-(3/4) // - (2*y)/3-(3/4)
3/4-((2*y)/3)-2/3 > 0
(-2/3)*y-2/3+3/4 > 0
1/12-2/3*y > 0 // - 1/12
-2/3*y > -1/12 // : -2/3
y < -1/12/(-2/3)
y < 1/8
y in (-oo:1/8)
(-oo:1/8)
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