Ответ:

[tex] \frac{7}{10} [/tex]

Пошаговое объяснение:

[tex](1 \frac{3}{4} + 2 \frac{1}{3} ) \div (7 \frac{1}{2} - 1 \frac{2}{3} ) = ((1 + 2) + ( \frac{3}{4} + \frac{1}{3} )) \div ( \frac{15}{2} - \frac{5}{3} ) = (3 + \frac{13}{12} ) \div \frac{35}{6} = (3 + 1 \frac{1}{12} ) \times \frac{6}{35} = (3 + 1 + \frac{1}{12} ) \times \frac{6}{35} = (4 + \frac{1}{12} ) \times \frac{6}{35} = 4 \frac{1}{12} \times \frac{6}{35} = \frac{49}{12} \times \frac{6}{35} = \frac{7}{2} \times \frac{1}{5} = \frac{7}{10} [/tex]