Question

8 h 6 min 12 s + 10 h 12 min 55 s=
17 h 31 min 52 s + 2h 54 min 27 s=
21 h 42 min 35 s - 12 h 58 min 18 s=
14 h - 8h 34 min 27 s= ​

Answer 1

Explicación paso a paso:

18h 19min 7s

20h 26min 19s

8h 54min 17s

5h 25min 33s