Question

Ion are porumbei si iepuri.cati porumbei si cati iepuri are ion daca in total sunt 51 capete si 132 de picioare

Answer 1

x+y=51
2x+4y=132
x=51-y
2(51-y)+4y=132
102-2y+4y=132
2y=30
y=15-iepuri
x=36-porumbei

Answer 2

notam cu a porumbei si b iepuri
a+b=51
2a+4b=132
a=51-b
2(51-b)+4b=132
2b=30
b=30:2
b=15 iepuri
a+15=51
a=36 porumbei