Question

Intr-o curte sunt curci si vitei ,in total 13 capete si 32 de picioare.Afla cate sunt din fiecare.Pls

Answer 1

x=curci
y=jitei
$\left \{ {{x+y=13} \atop {2x+4y=32}} \right.$⇔$\left \{ {{2x+2y=26} \atop {2x+4y=32}} \right.$
Le scadem si vom obtine:
-2y/=-6⇒y=3 jâțăi
x+y=13
x+3=13⇒x=10 curci

Answer 2

$v+c=13=\ \textgreater \ c=13-v \\ 2c+4v=32 \\ 2(13-v)+4v=32 \\ 26-2v+4v=32 \\ 2v=32-26 \\ v=6:2 \\ v=3 .vaci \\ c=13-3 \\ c=10.curci$