Solve: x+2y=10,y=xx + 2y = 10, y = xx+2y=10,y=x.
(3.33,3.33)(3.33, 3.33)(3.33,3.33)
(2,2)(2, 2)(2,2)
(5,5)(5, 5)(5,5)
(4,4)(4, 4)(4,4)