Question

Use Cordova Smart Class Software on the smart board in class to do E
1. Add :
al 3 hours 42 minutes and 12 hours 12 minutes.
5 4 hours 12 minutes 34 seconds and 12 hours 15 minutes 54 seconds.
la9 days 14 hours and 5 days 12 hours.
1 +2 years 7 months and 18 months.
Subtract:
(a) 4 hours 20 minutes from 6 hours 18 minutes.​

Answer 1

3 hours 42 minutes and 12 hours 12minutes

Answer 2

Step-by-step explanation:

i think 3 hours 42 mintus and 12 hours and 12 mintus