Question

spasite pomogite pliz​

Answer 1

Ответ:

Пошаговое объяснение:

1)

3/4 / (1/3х+1/4) + 2/3 = 1

3/4 / (1/3х+1/4) = 1 - 2/3

3/4 / (1/3х+1/4) = 1/3

1/3х + 1/4 = 3/4 : 1/3

1/3х + 1/4 = 3/4 * 3/1

1/3х + 1/4 = 9/4

1/3х = 9/4 - 1/4

1/3х = 8/4

1/3х = 2

х = 2 : 1/3

х = 2 * 3/1

х = 6/1

х = 6

2)

5/6 / (1/4х-7/12) - 1/2 = 3/14

5/6 / (1/4х-7/12) = 3/14 + 1/2

5/6 / (1/4х-7/12) = 3/14 + 7/14

5/6 / (1/4х-7/12) = 10/14

1/4х - 7/12 = 5/6 : 10/14

1/4х - 7/12 = 5/6 * 14/10

1/4х - 7/12 = 1/3 * 7/2

1/4х - 7/12 = 7/6

1/4х = 7/6 + 7/12

1/4х = 14/12 + 7/12

1/4х = 21/12

х = 21/12 : 1/4

х = 21/12 * 4/1

х = 21/3 * 1/1

х = 21/3

х = 7

3)

2. 1/3 / (3/8х-5/6) + 5. 2/3 = 9. 1/6

2. 1/3 / (3/8х-5/6) = 9. 1/6 - 5. 2/3

2. 1/3 / (3/8х-5/6) = 9. 1/6 - 5. 4/6

2. 1/3 / (3/8х-5/6) = 8. 7/6 - 5. 4/6

2. 1/3 / (3/8х-5/6) = 3. 3/6

3/8х - 5/6 = 2. 1/3 : 3. 3/6

3/8х - 5/6 = 7/3 : 21/6

3/8х - 5/6 = 7/3 * 6/21

3/8х - 5/6 = 1/1 * 2/3

3/8х - 5/6 = 2/3

3/8х = 2/3 + 5/6

3/8х = 4/6 + 5/6

3/8х = 9/6

х = 9/6 : 3/8

х = 9/6 * 8/3

х = 3/3 * 4/1

х = 12/3

х = 4