Question

помогите пожалуйста решить, 6,7, 8,9 ​

Answer 1

$\tt\displaystyle 6) \; 16 \frac{3}{13} - 6 \frac{8}{13} = 15 \frac{16}{13} - 6 \frac{8}{13} = (15 - 6) + (\frac{16}{13} - \frac{8}{13}) = 9 + \frac{8}{13} = 9 \frac{8}{13} \\\\ 7) \; 13 \frac{4}{9} - 2 \frac{8}{9} = 12 \frac{13}{9} - 2 \frac{8}{9} = (12 - 2) + (\frac{13}{9} - \frac{8}{9}) = 10 + \frac{5}{9} = 10 \frac{5}{9} \\\\ 8) \; 10 \frac{7}{16} - 4 \frac{12}{16} = 9 \frac{23}{16} - 4 \frac{12}{16} = (9 - 4) + (\frac{23}{16} - \frac{12}{16}) = 5 + \frac{11}{16} = 5 \frac{11}{16} \\\\ 9) \; 29 \frac{49}{53} - 8 \frac{49}{53} = (29 - 8) + (\frac{49}{53} - \frac{49}{53}) = 21 + 0 = 21$