Răspuns :
a=nr curci, b= nr cocosi- c= nr gaini, a+b+c=895, a+b=528, a=528-b,
b+c=603, b=603-b, inlocuim a si b in prima ecuatie, 528-b+b+603-b=895,
b=528+603-895=236 cocosi, a=528-236=292 curci, c=603-236=367 gaini
verificare, 236+292+367=895
603-528=75 (cocosi)
528-75=453 (curci)
453+75=528(cocosi si curci)
895-528=367(gaini)
528-75=453 (curci)
453+75=528(cocosi si curci)
895-528=367(gaini)