Ex.8
Va rog repede!!!!

8. Desfaceți parantezele, apoi efectuați:
a) -(-7)+(-3)+(-5+2)+(-1);
c)+(-3) -1)+(-6)-(-3);
e) -6+(-9)-(-3)+(-1)+(+1).
b) +(+4) (-2)+(+9)+(+7);
d) 8-(-3)+(-5)+(1+3)+(-2);

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