Question

o gospodarie sunt 20 de gaini si oi. Daca in total sunt 56 picioare,sa se afke cate gaini si pasari se gasesc in gospodarie

Answer 1

2×g+4×o =56
g+o=20 |×2

2×g+4×o=56
2×g+2×o=40
scadem cele doua ecuatii
4×o-2×o=56-40
2×o =16
o =16:2 = 8 oi

g=20-8=12 gaini

verificare:
12×2+4×8=24+32=56
Sper ca te-am ajutat!