Question

Intr-o curte sunt găini si iepuri, in total 43de capete si 124de picioare .cate găini si cari iepuri sunt?

Answer 1

43x2=86  124-86=38  38:2=19 iepuri
43-19=24gaini

Answer 2

x-gaini,    y-iepuri
x+y=43                inmultim cu -2
2x+4y=124

-2x-2y=-86
2x+4y=124           x se reduce
2y=38
y=38/2
y=19 iepuri
x=43-y
x=43-19
x=24 gaini