Ответ:
[tex] \frac{2 \times 8 + 5}{8} + ( - \frac{1 \times 10 + 6}{10} ) = \frac{2 \times 8 + 5}{8} + ( - \frac{10 + 6}{10} ) = \frac{16 + 5}{8} + ( - \frac{16}{10} ) = \frac{21}{8} + \frac{16}{10} = \frac{41}{40} = 1 \frac{1}{40} [/tex]
[tex] \frac{21}{8} + \frac{ - 16}{10} = \frac{21}{8} + \frac{ - 8}{10} = \frac{105 - 64}{40} = \frac{41}{40} = 1 \frac{1}{40} [/tex]
