The Williams budget 1/4 for rent and 1/3 for food. How much of their budget is left?

Add the given fractions by finding the common denominator.

The common denominator of 3 and 4 is 12.

1/4 = 3/12

1/3 = 4/12

Now you can add them together: 3/12 + 4/12 = 7/12

Now subtract that from 1 to find the rest of the budget:

1 - 7/12 = 5/12

5/12 is left.