Răspuns:
[tex]25 - (27 \div ((36 - 27 \div 3) \div 3) + 42 \div 7 \times 3 \\ 25 - (27 \div ((36 - 9) \div 3) + 42 \div 7 \times 3 = \\ 25 - (27 \div (27 \div 3) + 6 \times 3 \\ = 25 - (27 \div 9) + 18 \\ = 25 - 3 + 18 = 40[/tex]
