Question

1)x-7=11
2)4x-8=2x
3)5x+3=2x-6
4)3*(4x+5)=-9
5)7x-4*(3x-9)=25​

Answer 1

Ответ:

Пошаговое объяснение:

1)x-7=11

x = 11 + 7

x = 18

2)4x-8=2x

4x - 2x = 8

2x = 8

x = 8:2

x = 4

3)5x+3=2x-6

5x - 2x = -6 - 3

3x = -9

x = -9:3

x = -3

4)3*(4x+5)=-9

4x + 5 = -9:3

4x + 5 = -3

4x = -3 - 5

4x = -8

x = -8:4

x = -2

5)7x-4*(3x-9)=25​

7x - 12x + 36 = 25

-5x + 36 = 25

5x = 36 - 25

5x = 11

x = 11:5

x = 2,2

Answer 2

Ответ:

1) х=11+7

х=18

2) 4х-2х=8

2х=8

х=4

3)5х-2х=-6-3

3х=-9

х=-3

4) 12х+15=-9

12х=-9-15

12х=-24

х=-2

5) 7х-12х+36=25

-5х=25-36

-5х=-11

Х=11/5

Х=2,2