Răspuns :
[tex] {3}^{2} \times 8 \div 12 \times 13 \div 39 = 9 \times 8 \div 12 \times 13 \div 39 = 72 \div 12 \times 13 \div 39 = 6 \times 13 \div 39 = 78 \div 39 = 2[/tex]
[tex] {3}^{2} \times 8 \div 12 \times 13 \div 39 = 9 \times 8 \div 12 \times 13 \div 39 = 72 \div 12 \times 13 \div 39 = 6 \times 13 \div 39 = 78 \div 39 = 2[/tex]