Question

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

Answer 1

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