xty+z = 16 2x - y+z= 18 3x - z = 19 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 variable 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 Edit View Insert Format Tools Table U A EV VX C