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Efectuati:

4,52+11,6
3,008+12,25
18,354+12,29
8,97+7,062


Răspuns :

prima = 16,12
a doua = 15,258
a treia= 30.644
a patra=16,032
4,52+11,6=16,12
3,008+12,25=15,258
18,354+12,29=30,644
8,97+7,062=16,032