Question

а) 1/6+2/3х+1 2/9х=3
б)1 1/3х+2 1/2+5/6х=3 4/5
в)2 1/8+15/16х+1 3/4х+1/2=5 5/16
г)3/7х+1 1/2+3/14х+4/7=4 3/14
х= икс
Пж помогите!!​

Answer 1

Ответ:

Пошаговое объяснение:

А.

2/3х + 1. 2/9х = 3 - 1/6

6/9х + 1. 2/9х = 2. 5/6

1. 8/9х = 2. 5/6

х = 2. 5/6 : 1. 8/9

х = 17/6 : 17/9

х = 17/6 * 9/17

х = 9/6

х = 3/2

х = 1. 1/2

Б.

1. 1/3х + 5/6х = 3. 4/5 - 2. 1/2

1. 2/6х + 5/6х = 3. 8/10 - 2. 5/10

1. 7/6х = 1. 3/10

13/6х = 13/10

х = 13/10 : 13/6

х = 13/10 * 6/13

х = 6/10

х = 3/5

В.

15/16х + 1. 3/4х = 5. 5/16 - 2. 1/8 - 1/2

15/16х + 1. 12/16х = 5. 5/16 - 2. 2/16 - 8/16

1. 27/16х = 3. 3/16 - 8/16

2. 11/16х = 51/16 - 8/16

43/16х = 43/16

х = 43/16 : 43/16

х = 43/16 * 16/43

х = 1

Г.

3/7х + 3/14х = 4. 3/14 - 1. 1/2 - 4/7

6/14х + 3/14х = 4. 3/14 - 1. 7/14 - 8/14

9/14х = 59/14 - 21/14 - 8/14

9/14х = 30/14

х = 30/14 : 9/14

х = 30/14 * 14/9

х = 30/9

х = 10/3

х = 3. 1/3