Răspuns:
[tex](a \div 10 \div 100 + 5 \times 13) \div (4 + 4 \div 2) = 11 \\ (a \div 1000 + 65) \div 6 = 11 \\ a \div 1000 + 65 = 66 \\ a \div 1000 = 1 \\ a = 1000[/tex]
