Question

Все на картинках. Помогите

Answer 1

$1)3 \frac{1}{6} -2 \frac{7}{15} =3 \frac{5}{30}-2 \frac{14}{30} = \frac{21}{30} = \frac{7}{10} \\ 2) \frac{7}{10} :1 \frac{2}{5}= \frac{7}{10} * \frac{5}{7}= \frac{1}{2} \\ \\ \\ 1)2 \frac{2}{3} +1 \frac{5}{6}=2 \frac{4}{6} +1 \frac{5}{6} =3 \frac{9}{6}=4 \frac{1}{2} \\ 2)4 \frac{1}{2}:1 \frac{2}{5} = \frac{9}{2} * \frac{5}{7} = \frac{45}{14}=3 \frac{3}{14} \\ \\ \\ 1)4 \frac{8}{15}-1 \frac{1}{3}=4 \frac{8}{15} -1 \frac{5}{15} =3 \frac{3}{15}=3 \frac{1}{5}$
$2)3 \frac{1}{5} *1 \frac{7}{8} = \frac{16}{5} * \frac{15}{8} =6$