Let's put this into only hours to make it simple. Multiply 7 and 4 by 24. 7x24 = 168 4x24 = 96 Now that we have the total hours of days, add the extra hours to the total hours of days, 168 + 4 = 172 96 + 7 = 103 Subtract the two totals. 172-103 = 69. There are 69 total hours left. Now we need to convert that into days and hours, so divide 69 by 24. 69/24 = 2.875, or 2 days. We have 2 days, which is 48 hours. Subtract 48 from 69. 69 - 48 = 21. We have 21 hours. Our difference is 2 days and 21 hours. I hope this helps!
