7. Solve the system of equations. You may use any method (elimination, substitution, matrices, etc.). Whichever method you use, be sure to show appropriate work and/or explain what you did to arrive at your solution. x-y + z = 8 x + y + z = 6 x + y2 = 12

Use the given inverse of the coefficient matrix to solve the following system. 5x₁ + 2x₂ = 4 - 6x₁ - 2x₂ = - 3 A. = X1 and X2 = A-1- B. There is no solution. - 1 Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. 3 - 1 52 (Simplify your answers.)

Use the given inverse of the coefficient matrix to solve the following system. 7x₁ + 3x₂ = 12 - 6x₁-3x₂: = 4 A1 = -2 1 (Simplify your answers.) 3 Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. x₁ = and x₂ = OB. There is no solution.

Find the solution set by finding the inverse of the coefficient matrix and using the inverse to solve the system. 2х — у 3 3 4x + 3y = 1 %3D