Question

помогите пожалуйста я не знаю как это заделать

Answer 1

1)
$- 5 \frac{1}{4} + \frac{3}{8} = - 5 \frac{2}{8} + \frac{3}{8} = - 5 \frac{5}{8} = -5.625$

2)
8.64 + ( - 113.5) = 8.64 - 113.5 = - 104.86

3)
6.28 + ( - 10.72) = 6.28 - 10.72 = - 4.44

4)
$- \frac{9}{16} + ( - \frac{5}{16} ) =- \frac{9}{16} - \frac{5}{16} = - \frac{14}{16} = - \frac{7}{8}$

5)
$- 2 \frac{9}{20} + 5 \frac{7}{30} =- 2 \frac{27}{60} + 5 \frac{14}{60} =- \frac{147}{60} +$
$\frac{314}{60} =\frac{167}{60} = 2 \frac{47}{60}$

6)
- 1.29 + ( - 7.98) = - 1.29 - 7.98= - 9.27

7)
5.4 + ( - 7.1) = 5.4 - 7.1 = - 1.7

8)
- 13.9 + ( - 16.78) = - 13.9 - 16.78= - 30.68

9)
$- \frac{5}{7} + ( - \frac{9}{14} ) = - \frac{10}{14} - \frac{9}{14} = - \frac{19}{14} = - 1 \frac{5}{14}$

10)
$\frac{2}{9} + ( - \frac{5}{18} ) = \frac{4}{18} - \frac{5}{18} =- \frac{1}{18}$