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x in (-oo:+oo)
4-(x/3) > 11 // - 11
4-(x/3)-11 > 0
-1/3*x-7 > 0 // + 7
-1/3*x > 7 // : -1/3
x < 7/(-1/3)
x < -21
x in (-oo:-21)
(-oo:-21)
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