Question

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

1 3 and StartFraction 11 over 72 EndFraction pounds
2 3 and StartFraction 65 over 72 EndFraction pounds
3 4 and StartFraction 11 over 72 EndFraction pounds
4 4 and StartFraction 65 over 72 EndFraction pounds

plzzzzzzzz elp fast 53 points to woever helps

Answer 1

It would be 3.9 pounds put if rounded it would go to 4 pounds

Answer 2

about 3.9 lbs

Explanation:

18 7/9 lbs - 14 7/8 lbs

convert mixed numbers to improper fractions

169/9 - 119/8

convert to common denominator

1352/72 - 1071/72

subtract numerators

281/72

about 3.9 lbs