3x + y = 4 5x - y = 22 The signs of the matching values aren't the same so we add the rest of the equations. 8x = 26 Divide both sides by 8 to get x = 3.25 Now substitute back into the first equation. (3 x 3.25) + y = 4 9.75 + y = 4 Subtract 9.75 from both sides y = -5.75
