Joseph had 7 1/4 ounces of candy to share with his friends. He gave them 2 4/5 ounces of candy when they came over to play video games. How many ounces of candy does joseph have left?

7 1/4 - 2 4/5

Turn the denominator into a common denominator for both fractions:

7 5/20 - 2 16/20

To subtract easier, turn the fractions into an improper fraction:

145/20 - 56/20

Subtract the numerators:

145 - 56 = 89 - - - > 89/20

Simplify (to get an answer of):

4 9/20

Add labels:

Joseph has 4 9/20 ounces of candy left