Răspuns:
Explicație pas cu pas:
Metoda grafica
rate l------l
gaini l------l------l------l } total = 53 pasari
curci l------l + 3
53 - 3 = 50 → suma celor 5 parti egale ( 1+3+1=5)
50 : 5 = 10 rate
3 × 10 = 30 gaini
10 + 3 = 13 curci
_____________
Verific: 10 rate + 30 gaini + 13 curci = 53 pasari
r + g + c = 53
r = g : 3
r = c - 3
g = 3 × r
c = 3 + r
r + 3 × r + 3 + r = 53
5 × r + 3 = 53
5 × r = 53 - 3
5 × r = 50
r = 50 : 5
r = 10
g = 3 × 10
g = 30
c = 3 + 10
c = 13
