👤

in gozpodaria unui om se afla gaini si capre in total 130 picioare si 45 capete .cate gaini si capre sunt?

Răspuns :


x=gaini

y=capre

2*x+4*y=130=>2(x+2y)=130=>x+2y=65

x+y=45

y=20

x=25


g+c=45=>g=45-c
2g+4c=130
2(45-c)+4c=130
90-2c+4c=130
2c=130-90
c=40:2
c=20 capre
g=45-20=25 gaini