Let u=[7 2 5], v=[3 1 3], and w=[6 1 0]

It can be shown that 3u -5v-w = 0. Use this fact (and no row operations) to find x1 and x2 that satisfy the equation:

[7 3] x [x1] = [6]

[2 1] [x2] [1]

[5 3] [0]