Question

Я даю 60 б помогите
450 номер

Answer 1

Ответ:

Пошаговое объяснение:

1) а*b =7/9 * 3/7 = 1/3

а : b =7/9 : 3/7 = 7/9 * 7/3= 49/ 27= 1 22/27

2) b =  1 3/5 : 2 1/2 =  8/5 * 2/5= 16/25

 а * b = 1 3/5 * 16/25= 8/5 * 16/25=128/ 125= 1 3/ 125

3) а= 14/5= 2 4/5

а : b = 14/5 : 5/14= 14/5 * 14/5= 196/25= 7 21/25

4)b= 10 : 5 = 4

а : b = 5: 4= 1 1/4

5)  а*b = 1 24/25 * 1 2/3= 49/25 * 5/3= 49/15= 3 4/15

 а: b =  1 24/25 : 1 2/3 = 49/25 * 3/5= 147/125= 1 22/125

6) b = 1 : 8 1/3= 1 * 3/25=3/25

а : b = 8 1/3 : 1= 25/3 * 25/25= 25/3= 8 1/3

7) b = 3 1/3  : 7/10= 10/9 * 10/7= 100/63 = 1 37/63

а : b = 7/10 : 1 37/63= 7/10 * 63/100= 441/ 1000= 0,441

8) а= 8 * 16/3= 128/3= 42 2/3

а*b = 42 2/3 *  5 1/3= 128/3 * 16/3= 2048/9= 227 5/9