Question

1) 8(x-1)=x+13
2) 2(x-3)=7(2+x)
3) -4(x-2)=2x-4
4) (5x-4)-(2x-3)=8​

Answer 1

Ответ:

1) 8х - 8 =х+13

8х - х = 13 + 8

7х = 21

х = 3

2) 2х - 6 = 14 + 7х

2х - 7х = 14 + 6

-5х = 20

х = - 4

3) - 4х + 8 = 2х - 4

- 4х - 2х = - 4 - 8

-6х = - 12

х = 2

4) 5х - 4 - 2х + 3 = 8

5х - 2х = 8 - 3 + 4

3х = 9

х = 9

Answer 2

x=3

Answer 3

ой, 3

Answer 4

Ответ:

1.8(x-1)=x+13

 8x-8=x+13

 7x-8=13

 7x=21

 x=3

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

 2x-6=14+7x

 -5x=20

 x=-4

3.-4(x-2)=2x-4

 -4x+8=2x-4

 -6x=-12

 x=2

4.(5x-4)-(2x-3)=8

 5x-4-2x+3=8

 3x-1=8

 3x-9

 x=3