Question

x+4×y+2+2×z=13 și 3×x+2×z=13.aflati x+y+z

Answer 1

X+4Y+2Z=11
3X+2Z=13
4X+4Y+4Z=24
4(X+Y+Z)=24
X+Y+Z=24:4
X+Y+Z=6

Answer 2

X+4Y+2+2Z=13,,,,3X+2Z=13,,,,,,,X+Y+Z=?
X+4Y+2+2Z+3X+2Z=13+13
4X+4Y+4Z+2=26
4X+4Y+4Z=26-2
4X+4Y+4Z=24
4(X+Y+Z)=24
X+Y+Z=24/4
X+Y+Z=6