a)
-4≤x<0
-3≤x≤3
-6<x≤3
0<x<5
b)
4≤x<7
-2≤x<2
-3<x<8
-1<x≤7
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a)
-4≤x<0
-3≤x≤3
-6<x≤3
0<x<5
b)
4≤x<7
-2≤x<2
-3<x<8
-1<x≤7