Question

помогите пожалуйста! Даю 40 баллов​

Answer 1

Ответ:

1) 2x-6=14+7x

2x-7x=14+6

-5x=20

x=20/-5=-4

2) 11-55=4x-3x

-44=x

3) -4+10x=2x-6-5

10x-2x=-6-5+4

8x=-7

x=-7/8=-0,875

4) 8-5x=2x+4+8x+4

-5x-2x-8x=-8+4+4

-15x=0

x=0

5)-15x-9x=1-7

-24x=-6

x=-6/-24=1/4=0,25

6)-3x-8x=-105+17

-11x=-88

x=-88/-11=8

7)3x-x=4

2x=4

x=2

8) 0,5x-0,2x=-3

0,3x=-3

x=-3/0,3=-10

9) 4x+3x=6+8

7x=14

x=2

10) 7x-8x=9-1

-x=8

x=-8

11)3x-x=2

2x=2

x=1

12)0,4x-0,3x=14

0,1x=14

x=14/0,1=140

13) 5x+7x=4+8

12x=12

x=1

14) 4x-5x=-3-7

-x=-10

x=10

Пошаговое объяснение:

Answer 2

Ответ:

Пошаговое объяснение:

2(x - 3) = 7(2 + x)

2x - 6 = 14 + 7x

7x - 2x = -6 - 14

5x = -20

x = -20 : 5

x = -4

11 + 3x = 55 + 4x

4x - 3x = 11 - 55

x = -44

-2(2 - 5x) = 2(x - 3) - 5

-4 + 10x = 2x - 6 - 5

-4 + 10x = 2x - 11

10x - 2x = -11 + 4

8x = -7

x = -7 : 8

x = -0,875

8 - 5x = 2(x + 2) + (4x + 2) *2

8 - 5x = 2x + 4 + 8x + 4

8 - 5x = 10x + 8

10x + 5x = 8 - 8

15x = 0

x = 0

7 - 15x = 1 + 9x

15x + 9x = 7 - 1

24x = 6

x = 6 : 24

x = 0,25

-3x - 17 = 8x - 105

8x + 3x = 105 - 17

11x = 88

x = 88 : 11

x = 8

3x = x + 4

3x - x = 4

2x = 4

x = 4 : 2

x = 2

0,5x + 3 = 0,2x

0,5x - 0,2x = -3

0,3x = -3

x = -3 : 0,3

x = -10

4x - 8 = 6 - 3x

4x + 3x = 6 + 8

7x = 14

x = 14 : 7

x = 2

7x + 1 = 8x + 9

8x - 7x = 1 - 9

x = -8

3x = x + 2

3x - x = 2

2x = 2

x = 2 : 2

x = 1

0,4x - 14 = 0,3x

0,4x - 0,3x = 14

0,1x = 14

x = 14 : 0,1

x = 140

5x - 8 = 4 - 7x

5x + 7x = 4 + 8

12x = 12

x = 12 : 12

x = 1

4x + 7 = -3 + 5x

5x - 4x = 7 + 3

x = 10