X=20 Y=2 Explanation: To find Y: 45=20y+5, subtract 5 from both sides of the equal sign making 40=20y, then divide both sides of the equal sign by 20 making y=2. To find X: 80=5x-20, add 20 to both sides of the equal sign making 100=5x, then divide both sides by 5, meaning x=20
