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CALCULEAZA SI EFECTUEAZA PROBA IN TREI MODURI;


34+27=
47-29=
62-45=


Răspuns :

34+27=61
V:61-27=34
61-34=27
61=34+27
2) 47-29=18
V: 47-18=29
18+29=47   , 29=47-18
3)  62-45=17
62-17=45
62=17+45
17=62-45