Question

(x-7)-2(3x+5)=3

2t-(3t-1)=6

3x+6=-2x+4

-7(x-2)=3x-1

5x+2=7-3x

3(2x-5=1-4x

4(x-6)-3x=2(x-9)

4(x-1)=6(1+x)

2(x+3)-5=-2x-7

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

3(x+1)-(x+10)=x

2(3=2x)-3=3(x-1)-1

Answer 1

1. (x-7)-2(3x+5)=3

(x-7) - (6x+10)=3

x-7-6x-10=3

x-6x=3+17

-5x=20/ : (-5)

x= - 4

 

2. 2t-(3t-1)=6

2t - 3t + 1 = 6

- t = 5 /: (-1)

t = -5

 

3.

3x+6=-2x+4

3x + 2x = 4 - 6

5x = - 2 / : 5

x= - 2/5

 

4.

-7(x-2)=3x-1

- 7x + 14 = 3x -1

- 7x - 3 x = -1 - 14

- 10 x = - 15  / : (-10)

x = 15/ 10

x = 1,5

 

5.

5x+2=7-3x

5x + 3x = 7 - 2

8x = 5    /: 8

x= 5/8

 

6.

3(2x-5)=1-4x

6x - 15 = 1 - 4x

6x + 4 x = 1 + 15

10x = 16     /: 10

x=1 ⅗

 

7.

4(x-6)-3x=2(x-9)

4x - 24 - 3x = 2x - 18

x - 2 x = -18 + 24

- x = 6 /:(-1)

x= - 6

 

8.

4(x-1)=6(1+x)

4x - 4 = 6+ 6x

4x - 6x = 6 + 4

- 2 x = 10   / :(-2)

x=  - 5

 

9.

2(x+3)-5=-2x-7

2x + 6 - 5 = -2x - 7

4x = -7 -6 +5

4x= -8   /:4

x= - 2

 

10.

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

-x + 3 = - 3x + 2

-x + 3x = 2 - 3

2x = - 1    /:2

x=  -½

 

11.

3(x+1)-(x+10)=x

3x + 3 - x -10 =x

2x - x = 10-3

x=7

 

12.

2(3-2x)-3=3(x-1)-1

6 - 4x - 3 = 3x -3 -1

-4x -3x =-3-1+3-6

-7x = - 7      / :(-7)

x= 1