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Calculati 28(grade)30(minute)40(secunde)-10(grade)40(minute)50(secunde)

Răspuns :

28grade30min 40 sec- 10 grade 40 min 50 sec= 17 grade 40 min 50 sec
28 grade ,30 min , 40 sec - 10 grade , 40 min , 50 sec = 17 grade ,49 min si 50 sec