Question

Помогите пожалуста ​

Answer 1

Ответ:

$8 \ \frac{9}{20} \times \frac{2}{13} = \frac{169}{20} \times \frac{2}{13} = \frac{13}{10} \times \frac{1}{1} =$

$1 \frac{3}{10}$

Answer 2

Ответ:

1.8 9/20=169/20

169/20*2/13=13/10

2.10 1/2=22/1

21/1*2/7=3

3.3 1/9=28/9*3/8=7/6

4.10 1/5=51/5

51/5*10/17=6

5.5 1/3=16/3

16/3*3/8=2

6.5/6*1 6/5=1

7.9 1/7=64/7

64/7*3/4=48/7

8.3/11*5 1/2

5 1/2=11/2

3/11*11/2=3/2