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=[x³⁷]⁴:[x³¹]
=x¹⁴⁸:x³¹=x¹¹⁷
|x-3|<3
-3<x-3 ∧ x-3<3
x>0 ∧ x<6
x∈(0,6)
|x+4|>5
x+4>5 v x+4<-5
x>1 v x<-9
x∈(-∞,-9) u (1,∞)