Question

Пожалуйста помогите​

Answer 1

Ответ:

1. $43 + ( - 60) + 12 + 39 + ( - 21) = 43 - 60 + 12 + 39 - 21 = 13$
2. $- 1.23 + 2.14 + 7.38 + ( - 5.77) + 1.62 = - 1.23 + 2.14 + 7.38 - 5.77 + 1.62 = 4.14$
3. $- \frac{3}{7} + \frac{14}{19} + ( - \frac{4}{7} ) + 3 \frac{5}{19} = - \frac{3}{7} + \frac{14}{19} - \frac{4}{7} + \frac{62}{19} = 3$
4. $- \frac{5}{18} + ( - \frac{4}{81} ) + \frac{7}{18} + \frac{13}{81} = - \frac{5}{18} - \frac{4}{81} + \frac{7}{18} + \frac{13}{81} = \frac{2}{9}$
5. $- 3 \frac{5}{11} + 1 \frac{3}{8} + 2 \frac{5}{16} + ( - 4 \frac{6}{11} ) = - \frac{38}{11} + \frac{11}{8} + \frac{37}{16} - \frac{50}{11} = - \frac{69}{16}$