👤

Stiind ca x+4×y+2×z=13 si 3×x+2×z=11,determinati x+y+z.

Răspuns :

Stiind ca

x+4×y+2×z=13

3×x+2×z=11

4x+4y+4z=24

4(x+y+z)=6×4 /:4

x+y+z=6

determinati x+y+z=6