Solve: x+y=10,x−y=2,z=x+yx + y = 10, x - y = 2, z = x+yx+y=10,x−y=2,z=x+y.
(6,4,10)(6, 4, 10)(6,4,10)
(4,6,10)(4, 6, 10)(4,6,10)
(6,4,2)(6, 4, 2)(6,4,2)
(10,0,10)(10, 0, 10)(10,0,10)