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x in (-oo:+oo)
3-((2/3)*x) < 5 // - 5
3-((2/3)*x)-5 < 0
(-2/3)*x-5+3 < 0
-2/3*x-2 < 0 // + 2
-2/3*x < 2 // : -2/3
x > 2/(-2/3)
x > -3
x in (-3:+oo)
(-3:+oo)
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