👤

daca a+2b=22,a+b=14 aflati nr.alba.

Răspuns :

a+b=14|*2
2a+2b=28
a+2b=22
(scadem ecuatiile)
a=28-22
a=6
b=14-6
b=8


a+2b=22
a+b=14
b= 22-14
b=8
a+8=14
a=14-8
a=6