Basically subtract 59 from 709 which is 650 , halve 650 which is 325 and then add 59 to the other 325 that u have to add to the first 325 to make 650 so 709-59= 650 650\2= 325 325 + 59= 384 So 384 cheeseburgers were sold and 325 hamburgers 384+325= 709
