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x in (-oo:+oo)
x-((2/3)*x)-(5/3) < (13/12)*x // - (13/12)*x
x-((2/3)*x)-((13/12)*x)-(5/3) < 0
x+(-2/3)*x+(-13/12)*x-5/3 < 0
-3/4*x-5/3 < 0 // + 5/3
-3/4*x < 5/3 // : -3/4
x > 5/3/(-3/4)
x > -20/9
x in (-20/9:+oo)
(-20/9:+oo)
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