1lb., 8 oz + 3lb., 10 oz

Question

Write in simplest form 

Answer 1

1 lb + 3 lb = 4 lb

8 oz + 10 oz = 18 oz

Since there are 16 oz in 1 lb, the 18 oz becomes 1 lb, 2 oz.

Final mass = 4 lb + 1 lb + 2 oz = 5 lb, 2oz.