Answer :
7 pounds = 16 pounds and 1 pound = 6 pounds and 16 ounces.
(6 pounds + 16 ounces) minus (5 pounds + 10 ounces) = 1 pound + 6 ounces
(6 pounds + 16 ounces) minus (5 pounds + 10 ounces) = 1 pound + 6 ounces