Question

ПОМОГИТЕЕЕЕЕ!!!! ДАМ 100 БАЛЛОВ
593.
1) (4/9-11/15+2/3):3 2/5+2/9
2) 5:(-1,25)+2,8×1/7+1/3
3) (4 2/7:3 3/14-8+4 6/11)×3
4) 9,8:(10-37/15)×1 1/27​

Answer 1

Ответ:

на фото

Пошаговое объяснение:

Answer 2

Пошаговое объяснение:

№1

1) 4/9 - 11/15 + 2/3 = (20 - 33 + 30)/45 = 17/45

2) 17/45 : 3 2/5 = 17/45 : 17/5 = 17/45 * 5/17 = 1/9 * 1/1 = 1/9

3) 1/9 + 2/9 = 3/9 = 1/3

№2

1) 5 : (-1,25) = -4

2) 2,8 * 1/7 = 28/10 * 1/7 = 4/10 * 1/1 = 4/10 = 2/5

3) -4 + 2/5 = -3 5/5 + 2/5 = -3 3/5

4) -3 3/5 + 1/3 = -3 9/15 + 5/15 = -3 4/15

№3

1) 4 2/7 : 3 3/14 = 30/7 : 45/14 = 30/7 * 14/45 = 2/1 * 2/3 = 4/3 = 1 1/3

2) 1 1/3 - 8 = 1 1/3 - 7 3/3 = -6 2/3

3) -6 2/3 + 4 6/11 = -6 22/33 + 4 18/33 = -2 4/33

4) -2 4/33 * 3 = -70/33 * 3 = -70/11 * 1 = -70/11 = -6 4/11

№4

1) 10 - 3 7/15 = 9 15/15 - 3 7/15 = 6 8/15

2) 9,8 : 6 8/15 = 98/10 : 98/15 = 98/10 * 15/98 = 1/2 * 3/1 = 3/2

3) 3/2 * 1 1/27 = 3/2 * 28/27 = 1/1 * 14/9 = 14/9 = 1 5/9