= 1 hour 45 minutes 15 seconds - 3 hours 15 minutes 0 seconds
= 1 hour - 3 hours + 45 minutes - 15 minutes + 15 seconds - 0 seconds
= -2 hours 30 minutes 15 seconds
Subtract 3hours 15 minutes 0 seconds from 1 hour 45 minute 15 seconds
1 answer