2. For each of the following systems of linear equations, find its coefficient and augmented matrices. | 2x1 x2 = 6 1. 4x1 + x2 -x1 + 2x2 + 3x3 = 4 = 3 3x1 + 2x2 3x3 = 5 2x1 + 3x2 3x3 2. X3 = 1 4 = 0 22 52 8 0 3x1 + 2x2 - x3 = 4 3. -