A:
| 2x+1 | <=5
-5<=2x+1<=5 / -1
-6<=2x<=4 / 1/2
-3<=x<=2
x€[-3,2]
B:
-3<(x+1)/2<=1 / 1/2
-3/2<x+1<=1/2 / -1
-3/2-1<x<=1/2-1 // Amplificam si avem:
(-3-2)/2<x<=(1-2)/2
-5/2<x<=-1/2
x€(-5/2,-1/2]
A U B = [-3,2]
A int B = (-5/2,-1/2]
A - B =[-3,-5/2) U [-1/2,2]
B - A = Multimea vida ( Deoarece B inclus in A)
Bafta!
