Question

Dintr-o ferma s-au vandut 563 gaini si gaste, iar gaini si rate 492. Cate pasari din fiecare fel s-au vandut daca la inceput au fost 854?

Answer 1

x=gaini
y=gaste
z=rate


x+y+z=854

x+y=563 
x+z=492

563+z=854
z=854-563
z=291

492+y=854
y=854-492
y=362

x+291=492
x=492-291
x=201

Verificare : 201+362+291=854

Answer 2

gaini+gaste+rate=854
gaini+____+rate=492
gaini+gaste+___=563
gaste=854-492=362
rate=854-563=291
gaini=(563+492)-854=1055-854=201