Question

intr-o curte sunt gaini si iepuri, in total 11 capete si 34 de picioare. Cate gaini si cati iepuri sunt in curte?

Answer 1

$g+i=11 \\ 2g+4i=34 \\ g=11-i \\ 2(11-i)+4i=34 \\ 22-2i+4i=34 \\ 2i=34-22 \\ i=12:2=6 iepuri \\ g=11-6=5gaini$