Question

Помоги решить 3.18 дам 100 баллов
За 5 минут даю тебе
Пж пж пж

Answer 1

Ответ:

Пошаговое объяснение:

1)

(х - 5 3/21) + 2 6/7 = 9 1/14

(х - 5 3/21) = 9 1/14 - 2 6/7

(х - 5 3/21) = 9 1/14 - 2 12/14

(х - 5 3/21) = 8 15/14 - 2 12/14

(х - 5 3/21) = 6 3/14

х = 6 3/14 + 5 3/21

х = 6 9/42 + 5 6/42

х = 11 15/42

х = 11 5/14

2)

21 1/4 - (х + 2 5/12) = 6 7/8

(х + 2 5/12) = 21 1/4 - 6 7/8

(х + 2 5/12) = 21 2/8 - 6 7/8

(х + 2 5/12) = 20 10/8 - 6 7/8

(х + 2 5/12) = 14 3/8

х = 14 3/8 - 2 5/12

х = 14 9/24 - 2 10/24

х = 13 33/24 - 2 10/24

х = 11 23/24

3)

14 2/5 - (х + 8 2/15) = 1 1/10

(х + 8 2/15) = 14 2/5 - 1 1/10

(х + 8 2/15) = 14 4/10 - 1 1/10

(х + 8 2/15) = 13 3/10

х = 13 3/10 - 8 2/15

х = 13 9/30 - 8 4/30

х = 5 5/30

х = 5 1/6

4)

(х - 11 7/9) + 5 5/18 = 7 1/12

(х - 11 7/9) = 7 1/12 - 5 5/18

(х - 11 7/9) = 7 3/36 - 5 10/36

(х - 11 7/9) = 6 39/36 - 5 10/36

(х - 11 7/9) = 1 29/36

х = 1 29/36 + 11 7/9

х = 1 29/36 + 11 28/36

х = 12 57/36

х = 13 21/36

х = 13 7/12