Problem 16 Begin by setting corresponding positions equal to each other. 9 = x + 2y and 13 = 4x + 1 The second equation only has one variable so you should solve it first. 13 = 4x + 1 13 - 1 = 4x + 1 - 1 12 = 4x (divide both sides by 4) 3 = x you can use this value to find y in the other equation 9 = 3 + 2y 9 - 3 = 3 - 3 + 2y 6 = 2y 3 = y