Задание по теме "уравнения" на карточке.

Пошаговое объяснение:

3x - 2 = 7

3x = 7 + 2

3x = 9

x = 9:3

x = 3

4x + 3 = -2x

4x + 2x = -3

6x = -3

x = -3 : 6

x = -0,5

6 + 5x = -2x - 1

5x + 2x = -1 - 6

7x = -7

x = -7:7

x = -1

2(x - 3) = 3x

2x - 6 = 3x

3x - 2x = -6

x = -6

9 + 2(3 - 4x) = 2x - 3

9 + 6 - 8x = 2x - 3

15 - 8x = 2x - 3

2x + 8x = 15 + 3

10x = 18

x = 18 : 10

x = 1,8

3x-2=7

3x=7+2

3x=9

x=3

4x+3= -2x

4x+2x=-3

6x=-3

x=-1/2

6+5x=-2x-1

5x+2x=-1-6

7x=-7

x=-1

2(x-3)=3x

2x-6=3x

2x-3x=6

-x=6

x=-6

9+2(3-4x)=2x-3

9+6-8x=2x-3

15-8x=2x-3

-8x-2x=-3-15

-10x=-18

x=9/5