Respuesta :

11/3-4/3=7/3 or 2 1/3.


Note: 1 3/9 simplifies to 1 1/3.


Answer: Melvin's backpack is 2.33 lbs heavier


Step-by-step explanation:

Convert the fractions to decimals (personal preference there)

2/3 = 0.666

3/9 = 0.333

3.66-1.33=2.33