3y + 2z =-12 xty -7 2x - 3z - 22 a) 2 pts - Use row operations or existing equations to obtain a linear system of equations in two variables. Indicate the row operation if any to produce the stated equation. First equation in two variables is: (Insert row operations if any, example: 2R1 - R2) Second equation in two variables is: (Insert row operations if any, example: 2R1 - R2) b) 2 pts - Use row operations or existing equations to solve the system from part a) c) 1 pt - Solve for the remaining variable. Indicate which row you used in the original system to find the solution of the remaining variable. d) 1 pt - Write your answer as an ordered triple in the form ( x. y, z). Solving Systems of Linear Equations in Three Variables by Eliminating Variables- Example 1 Solving Systems of Linear Equations in Three Variables by Eliminating Variables- Example 2