Question

6 15 Найдите корни уравнений (846—848)Помогите пожалуйста ​

Answer 1

Пошаговое объяснение:

17х - 2,6 = 3(0,8 + 3х)

17х - 2,6 = 2,4 + 9х

17х - 9х = 2,4 + 2,6

8х = 5

х = 5 : 8

х = 0,625

38(0,1х + 1) = 40 - 3,2х

3,8х + 38 = 40 - 3,2х

3,8х + 3,2х = 40 - 38

7х = 2

х = 2 : 7

х = 2/7

4/7(х - 1) = 2/7 + х

4/7х - 4/7 = 2/7 + х

4/7х - х = 2/7 + 4/7

-3/7х = 6/7

х = 6/7 : (-3/7)

х = 6/7 * (-7/3)

х = 2/1 * (-1/1)

х = -2/1

х = -2

5(х - 1,5) = 4 2/3х - 8 3/14

5х - 7,5 = 4 2/3х - 8 3/14

5х - 4 2/3х = -8 3/14 + 7,5

4 3/3х - 4 2/3х = -8 3/14 + 7 1/2

1/3х = -8 3/14 + 7 7/14

1/3х = -7 17/14 + 7 7/14

1/3х = -10/14

х = -10/14 : 1/3

х = -10/14 * 3/1

х = -30/14

х = -15/7

х = -2 1/7