Răspuns :
3*[..paranteza...]=16+17=33 |impartim prin 3
[.paranteza ..]=11
4|2x+1|-9=11
4|2x+1|=9+11=20 | impartim prin 4
|2x+1|=5
atunci
2x+1=5⇒x=2
si
2x+1=-5⇒x=-3
S={-3;2}
[.paranteza ..]=11
4|2x+1|-9=11
4|2x+1|=9+11=20 | impartim prin 4
|2x+1|=5
atunci
2x+1=5⇒x=2
si
2x+1=-5⇒x=-3
S={-3;2}