[tex](2.75 + 1 \frac{1}{3} ) \div 7 = (2 \frac{3}{4} + 1 \frac{1}{3} ) \div 7 = (2 \frac{9}{12} + 1 \frac{4}{12} ) \div 7 = 3 \frac{13}{12} \div 7 = 4 \frac{1}{12} \div 7 = \frac{49}{12} \div \frac{7}{1} = \frac{49}{12} \times \frac{1}{7} = \frac{7}{12} [/tex]
