Use Cramer's rule to solve for zzz in the system: {x+2y+z=12x−y+z=2x+y+2z=3\begin{cases} x + 2y + z = 1 \\ 2x - y + z = 2 \\ x + y + 2z = 3 \end{cases}⎩⎨⎧x+2y+z=12x−y+z=2x+y+2z=3
53\frac{5}{3}35
−53-\frac{5}{3}−35
35\frac{3}{5}53
23\frac{2}{3}32