7. Calculaţi:
FOSF
a) 437: (2-271)+(3+3·105): 106;
b) 3³+3 10:38-3+3-37:35+2.310: (5.35 +35) +9.3³;
c) [3². 33 +254: 252 +(35)*: 320]: 31;
d) [348 : 318+ (24)5+623: 6131: [(35)-(22) +317.313.
+3¹7. 3¹3 + (25)*]; clasa a5 a pag 73 ex 7