Prin metoda reducerii
Văăă roooooooooooooog muult dee toot

Răspuns:
Explicație pas cu pas:
13x/5+2y=1
-13x/5-416y/13=-13
.....................................
\ -30y=-12 y=12/30=2/5
13x/5+4/5=1 13x/5=1/5 x=1/13