Question

Eliza’s backpack weighs 18 and 7/9 pounds with her math book in it. Without her math book, her backpack weighs 14 and 7/8 pounds. How much does Eliza’s math book weigh?

Answer 1

Explanation:

8 7/9 - 14 7/8

= 169/9 - 119/8

now you must find a common denominator

= 281/72

3 65/72 lbs