Use Cramer's Rule to solve (if possible) the system of linear equations. (If not possible by Cramer's Rule, enter IMPOSSIBLE.) X1 + 2x2 -X1 + X2 = 3 %3D STEP 1: Find the coefficient matrix. A STEP 2: Find A1. STEP 3: Find A2. A2 = STEP 4: Solve for x1. X1 TAT STEP 5: Solve for x2. X2 =

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