Solve: x+2y=7x + 2y = 7x+2y=7 and x−2y=1x - 2y = 1x−2y=1.
(3,2)(3, 2)(3,2)
(4,1.5)(4, 1.5)(4,1.5)
(1,3)(1, 3)(1,3)
(4,3)(4, 3)(4,3)