aduni gradele cu gradele si minutele cu minutele. daca suma minutelor depaseste 60 , atunci se transforma intr - un grad
a) 23 + 15 = 38 de grade
15 + 45 = 60 minute = 1 grad
=> 23 grade 15 minute + 15 grade 45 minute = 39 de grade
b) 12 + 13 = 25 de grade
48 + 52 = 100 minute = 1 grad si 40 minute
12 grade 48 minute + 13 grade 52 minute= 26 grade si 40 de minute
