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Calculeaza :
A=(4-7)-(-11+19) B= -(6-2)+11-19 C=27-(+49)-(18-27)+(-28) D=1-(2-3)-(4-5)-(6-7)-(8-9) E=27-(+49)-(18-27)+(-28) F=1-(2-3)-(4-5)-(6-7)-(8-9)


Răspuns :

Răspuns:

A = 5

B=4

C=-41

D=-3

E=-41

F=-3