Darcy washes and drys 20 shirts and 8 pairs of shorts. If he folds 12 of the shirts and 5 of the shorts, how many more remaining pieces of clothing does Darcy have to fold?
Darcy still has to fold 20 - 12 = <T>subtract(20, 12)=8 shirts
Darcy still has to fold 8 - 5 = <T>subtract(8, 5)=3 shorts
Darcy has to fold a total of 8 + 3 = <T>add(8, 3)=11 pieces of clothing
