18 04 22 6 кл Рівняння

3(х + 3) = 2(х - 4)

   3х + 3 * 3 = 2Х – 2*4

    3х + 9 = 2х – 8

   3х – 2х = -8 - 9

       х = - 17

3(х + 3) = 2(х - 4)

   3х + 3 * 3 = 2Х + 2*4

    3х + 9 = 2х + 8

   3х – 2х = 8 - 9

       х = - 1

4х – 10 = 5х + 4

   4х + 5х = 4 + 10

         9 Х = 14

х = 14 : 9

х = 14/ 9

4х – 10 = 5х + 4

   4х - 5х = 4 + 10

         - Х = 14

х = 14 : (-1)

х = - 14

-2(х – 5) = 3х

   -2х – 2 * 5 = 3х

-2х – 10 = 3х

-2х – 3х = 0 + 10

 -5Х = 10

х = 10 : ( - 5)

х = -2

-2(х – 5) = 3х

   -2х – 2 *(- 5) = 3х

-2х + 10 = 3х

-2х – 3х = 0 - 10

 -5Х = - 10

х = - 10 : ( - 5)

х = 2

-2(х – 5) = 3х

   -2х – 2 *(- 5) = 3х

-2х + 10 = 3х

-2х – 3х = 0 + 10

 -5Х = 10

х = 10 : ( - 5)

х = - 2

5(х - 2) = -5

 5Х - 5 * 2 = -5

   5х - 10 = -5

  5х = -5 + 10

   5х = 5

   Х = 5:5

  Х = 1

5(х - 2) = -5

 5Х + 5 * 2 = -5

   5х + 10 = -5

  5х = -5 - 10

   5х = -15

   Х = -15:5

  Х = -3

7(х + 2) = 2(х - 4)

   7х + 7 * 2 = 2Х – 2*4

    7х + 14 = 2х – 8

   7х – 2х = -8 - 14

       -5х = - 22

        Х = -22 : ( -5)

         Х = 22/5

7(х + 2) = 2(х - 4)

   7х + 7 * 2 = 2Х + 2*4

    7х + 14 = 2х + 8

   7х – 2х = 8 - 14

       -5х = - 6

        Х = -6 : ( -5)

         Х = 6/5