Question

2x+y-3z=0
-2x+2y+z=-7
3x-4y-3z=7

Answer 1

[x,y,z]=[−4,11,−21] this or this \left[x \right] = \left[ \frac{y}{4}+z\right][x]=[

4

y

+z] this [x]=[0.25y+z]