Выполни действия в заданиях 6, 7 и 8.

Конечно, давай помогу! Вот решение задания №6: a) $6 \frac{3}{8} - 8 = 6.375 - 8 = -1.625$ б) $-2 \frac{2}{7} + 4 \frac{3}{5} = -2.286 + 4.6 = 2.314$ в) $5 \frac{1}{3} - 6 \frac{1}{4} = 5.333 - 6.25 = -0.917$ г) $ \frac{3}{8} : (-\frac{9}{16}) = \frac{3}{8} \cdot (-\frac{16}{9}) = -\frac{2}{3}$ д) $12 \frac{5}{12} \cdot (-6) = \frac{149}{12} \cdot (-6) = -74.5$ e) $-3 \frac{2}{9} \cdot 3 = -\frac{29}{9} \cdot 3 = -\frac{29}{3} = -9 \frac{2}{3}$ ж) $\frac{4}{7} \cdot (-49) = -28$ з) $-16 : (-\frac{4}{9}) = -16 \cdot (-\frac{9}{4}) = 36$ и) $-3 \frac{1}{2} \cdot (-1 \frac{3}{7}) = -\frac{7}{2} \cdot (-\frac{10}{7}) = 5$ Теперь задание №7: a) $3 \frac{3}{5} \cdot 3 + 6 \frac{1}{4} : 2 = 3.6 \cdot 3 + 6.25 : 2 = 10.8 + 3.125 = 13.925$ б) $12 \frac{3}{8} - 5 \frac{1}{4} + 7 \frac{1}{2} = 12.375 - 5.25 + 7.5 = 14.625$ в) $2 \frac{5}{6} - 1 \frac{1}{5} + 1 \frac{5}{7} : 1 \frac{1}{7} = 2.833 - 1.2 + 1.714 : 1.143 = 1.633 + 1.5 = 3.133$ г) $1 \frac{1}{16} : 2 \frac{1}{26} = \frac{17}{16} : \frac{53}{26} = \frac{17}{16} \cdot \frac{26}{53} = \frac{221}{424} = 0.521$ И наконец, задание №8: a) $3 \frac{2}{15} + 1 \frac{1}{5} : 3 \frac{2}{5} = 3.133 + 1.2 : 3.4 = 3.133 + 0.353 = 3.486$ б) $( \frac{11}{2} - \frac{11}{4} ) : 3 \frac{3}{4} + \frac{2}{3} = (5.5 - 2.75) : 3.75 + 0.667 = 2.75 : 3.75 + 0.667 = 0.733 + 0.667 = 1.4$ в) $2 \frac{2}{3} - \frac{8}{23} \cdot (4 + 1 \frac{1}{6}) = 2.667 - 0.348 \cdot (4 + 1.167) = 2.667 - 0.348 \cdot 5.167 = 2.667 - 1.798 = 0.869$ г) $5 \frac{2}{9} : (3 - 1 \frac{9}{25}) + 5 = 5.222 : (3 - 1.36) + 5 = 5.222 : 1.64 + 5 = 3.184 + 5 = 8.184$ д) $4 \frac{5}{6} - \frac{5}{8} - 2 \frac{1}{6} : 1 \frac{1}{6} = 4.833 - 0.625 - 2.167 : 1.167 = 4.833 - 0.625 - 1.857 = 2.351$ е) $(4 - 2 \frac{1}{2}) : 5 \frac{3}{5} - 3 \frac{1}{3} = (4 - 2.5) : 5.6 - 3.333 = 1.5 : 5.6 - 3.333 = 0.268 - 3.333 = -3.065