Modul 2x-3modul egal cu 11



Răspuns :

|2x-3|=11
2x-3=±11
2x-3=11 =>2x=11+3 =>2x=14 =>x=14:2=>x=7
2x-3=-11 =>2x=-11+3 =>2x=-8 =>x=-8:2 =>x=-4
2x-3=11
2x=11-3
2x=8
x=2:8
x=4