Question

In ograda sunt 32 de gaini roscate negre si albe. Daca 12 gaini sunt roscate si cu 3 mai putine sunt negre cate gaini sunt albe

Answer 1

32-(12+9)=32-21=11
11gaini albe

Answer 2

32-12[gaini roscate]-(12-3)[gaini negre]=gainile albe
20-9=gaini albe
11=gaini albe
gaini albe=11