Question

Помогите срочно даю 15 баллов

Answer 1

$\frac{2}{3 } + ( - 10 \times \frac{1}{3} = \frac{2}{3} - 10 \frac{1}{3} = 9 \frac{2}{3}$

$- \frac{3}{8} + \frac{4}{7} = - \frac{21}{56} + \frac{32}{56} = \frac{11}{56}$

$\frac{3}{5} + ( - 1 \frac{5}{6} ) = \frac{18}{30} - \frac{55}{30} = - \frac{37}{30} = - 1 \frac{7}{30}$

$\frac{2}{9} + ( - 1 \frac{5}{6} ) = \frac{12}{54} - \frac{99}{54} = - \frac{87}{54} = - 1 \frac{33}{54}$

$\frac{4}{5 } + ( - \frac{2}{7} ) = \frac{28}{35 } - \frac{10}{35} = \frac{18}{35}$

$- 9 + \frac{2}{9} = - 8 \frac{9}{9} + \frac{2}{9} = - 8 \frac{7}{9}$