2x+y=3 -4x-4y=-8 using elimination?
2x + 1y = 3 ⇒ 8x + 4y = 12-4x - 4y = -8 ⇒ -4x - 4y = -8 4x = 4 4 4 x = 1 2x + y = 3 2(1) + y = 3 2 + y = 3 - 2 - 2 y = 1 (x, y) = (1, 1)