# Subtracting Mixed Time

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Steps to subtract days and hours:

1. If the number of hours being subtracted is more, then decrease the days by 1 and increase the hours by 24.
(Since, 1 day = 24 hours)

2. Subtract the days.

3. Subtract the hours.

For example: Let's subtract:

39 days 21 hours – 15 days 23 hours = ?

Notice that, we cannot subtract 23 hours from 21 hours.

So, decrease the days by 1 and increase the hours by 24:

39 days – 1 day = 38 days

21 hours + 24 hours = 45 hours

So, 39 days 21 hours – 15 days 23 hours = 38 days 45 hours – 15 days 23 hours

Now, subtract the days.

38 days – 15 days = 23 days

Now, subtract the hours.

45 hours – 23 hours = 22 hours

So, 39 days 21 hours – 15 days 23 hours = 23 days 22 hours.

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