Răspuns :
a+v=67
a=v/2+7 aducem la acelasi numitor
a=v+14/2
v+14/2 +v=67 aducem la acelasi numitor
v+14+2v=134
3v=134-14
3v=120
v=40 a=40/2 +7=20+7=27
a=v/2+7 aducem la acelasi numitor
a=v+14/2
v+14/2 +v=67 aducem la acelasi numitor
v+14+2v=134
3v=134-14
3v=120
v=40 a=40/2 +7=20+7=27