Solving this system of equations by the elimination method, Joe subtracted equation (3) from equation (1).
(1) x − y + z = 2
(2) 2x − 3y + 4z = 4
(3) - 3x + 4y + z = 0
Equation (1) - Equation (3)
Result (1) -4x - 5y = 2
Next, he multiplied equation (1) by -3 and added equations (1) and (2).
Result (2) 5x + z = -2
Choose all the correct statements below.
(Hint: Write out the problem and solve the system)
