х+3=3х-7 3-х=1+х 7х+2=3х-7 5х-8=3х-8 1/2х-3=2-1/3х 5х-2 1/4=1/2х

Question

х+3=3х-7 3-х=1+х 7х+2=3х-7 5х-8=3х-8 1/2х-3=2-1/3х 5х-2 1/4=1/2х

Answer 1

х+3=3х-7

х-3х=-7-3

-2х=-10

х=10:2

х=5

 

3-х=1+х

-х-х=1-3

-2х=-2

х-1

 

7х+2=3х-7

7х-3х=-7-2

4х=-9

х=-2,25

 

5х-8=3х-8

5х-3х=-8+8

2х=0

х=0

 

 

Answer 2

х+3=3х-7;

-2x = - 10

x = 5

 

 

 

3-х=1+х

- 2x = - 2

x= 1

 

 7х+2=3х-7

7x-3x =-7-2

4x =- 9

x= - 2.25

 

5х-8=3х-8  

5x-3x=-8+8

2x=0

x=0