Solve: x−y=5,2x+y=13x - y = 5, 2x + y = 13x−y=5,2x+y=13.
(6,1)(6, 1)(6,1)
(5,0)(5, 0)(5,0)
(7,2)(7, 2)(7,2)
(4,−1)(4, -1)(4,−1)