(@ Use row reduction to find the general solution for the following system of linear equations: -21 - Z2 - 23 + 24 = 0 Z2 + 323 - 24 = 0 -221 - 422 + 423 - 224 = 0 (b) The points (1, 1, 1), (0, 1, 3), and (-1, -2, 2) lie on a unique plane a1 1 + a2 2 + a3x3 = 6. Using your previous answer, find an equation for this plane. (Hint: write a linear system to solve for the coefficients a1, a2, a3, and b. How is this linear system related to the linear system in part (a)?)