Question

пж хелп
даю 100 баллов

Answer 1

б) 0: (10/3 * 25/33)-(2/5 * 4/3) * 3/4= 0: 250/99 - 8/15 * 3/4= 0-2/5= -2/5
Ответ: -2/5

г) 7/2 * 4/49 -(2*4* 27/11):(-42/5)= 2/7 - 216/11 : (-42/5) = 2/7+ 216/11 * 5/42= 2/7+ 36/11 * 5/7 = 2/7+ 180/77= 202/77= 2 48/77
Ответ: 2 48/77

Если не трудно и все так, поставьте корону;)

Answer 2

Пошаговое объяснение:

Б)

0,(5) = (5 - 0)/9 = 5/9

0,(2) = (2 - 0)/9 = 2/9

1) 0,(5) * 0,(2) = 5/9 * 2/9 = 10/81

2) 3 1/3 : 33/25 = 10/3 * 25/33 = 250/99

3) 10/81 : 250/99 = 10/81 * 99/250 = 1/9 * 11/25 = 11/225

4) 2/5 * 1 1/3 = 2/5 * 4/3 = 8/15

5) 8/15 : 4/3 = 8/15 * 3/4 = 2/5 * 1/1 = 2/5

6) 11/225 - 2/5 = 11/225 - 90/225 = -79/225

Г)

2,(4) = 2 (4-0)/9 = 2 4/9

1) 2,(4) * 2 5/11 = 2 4/9 * 2 5/11 = 22/9 * 27/11 = 2/1 * 3/1 = 6/1 = 6

2) 6 : (-42/5) = 6 * (-5/42) = 1 * (-5/7) = -5/7

3) 3 1/2 * 4/49 = 7/2 * 4/49 = 1/1 * 2/7 = 2/7

4) 2/7 - (-5/7) = 2/7 + 5/7 = 7/7 = 1