Răspuns :
x+2(y+z)=5+2x14=33.........................
sau:
y+z=14 I x2
2(y+z)=28 si stim ca x=5, adunam cele doua relati:
x+2(y+z)=5+2x14=33
sau:
y+z=14 I x2
2(y+z)=28 si stim ca x=5, adunam cele doua relati:
x+2(y+z)=5+2x14=33