x+y+z=10801.
x-1820=y-2220=z-8000
vom nota acele 3 numere egale obtinute mai sus cu K.
(k+1820)+(k+2220)+(k+8000)=10801.
3k+1820+2220+8000=10801
3k=10801-(1820+2220+8000)
3k=-1239
k=-1239:3
k= -413
x=k+1820
x= -413+1820
x= 1407
y=k+2220
y= -413+2220
y= 1807
z=k+8000
z= -413+8000
z= 7587
verificare: 1407+1807+7587= 10801
sper ca te-am ajutat. daca nu intelegi cum am rezolvat, intreaba