Bütün birimleri saniyeye çevirelim ve sonrada çıkarma işlemini yaptıktan sonra eski birimlere çevirelim:
1 saat=3600sn
1dk=60sn
6saat+10dk+20sn=21600sn+600sn+20sn=22220sn
3saat+40dk+30sn=10800sn+2400sn+30sn=13230sn
22220sn-13230sn=8990sn
8990sn=7200sn+1740sn+30sn=3saat+29dk+30sn
#ilhan2006oz
#Eski Opti
