Question

determine a solução destas equação

1) 5x+x-4 sobre 7 = -4

2) 2x-1 sobre 2 = 8

3) 3x+2x+1=6

4) 7x+5x= 5

5) 7x sobre 3 = 6

6) 4x sobre 3 = 6

7) x + x = 8

8) 7x +2 = 6 + 2x

9)3x- 8 = 8 - x

10) 5x - 35 = 6 - 4x + 8

11) 5x = 2x + 3

12) 4x sobre 3 = 5

13) 3x = 2x - 6

14) 4x sobre 5 = 8

15) x + 3 = - 2x + 12

16) 5x = 30

17) 5x + 3 - x = - 4

18) 6x + x - 1 = 6

19) 4x sobre 3 = 4

20) x + x = 6

21) 5x - x = 8

22) x + x = 10

23) 3x sobre 4 = 5

Answer 1

Ola Anderson

1) 5x + (x - 4)/7  = -4

35x + x - 4 = -28
36x = -24 
x = -24/36 = -2/3

2) (2x - 1)/2  = 8

2x - 1 = 16
2x = 17
x = 17/2

3) 3x + 2x + 1 = 6

5x = 5
x = 1

4) 7x + 5x = 5

12x = 5
x = 5/12 

5) 7x/3 = 6

7x = 18
x = 18/7 

6) 4x/3 = 6

4x = 18
x = 9/2

7) x + x = 8

2x = 8
x = 4

8) 7x + 2 = 6 + 2x

7x - 2x = 6 - 2
5x = 4
x = 4/5

9) 3x - 8 = 8 - x

3x + x = 16
4x = 16
x = 4

10) 5x - 35 = 6 - 4x + 8

5x + 4x = 14 + 35
9x = 49
x = 49/9

11) 5x = 2x + 3

5x - 2x = 3
3x = 3
x = 1

12) 4x/3 = 5

4x = 15
x = 15/4 

13) 3x = 2x - 6

3x - 2x = -6
x = -6

14) 4x/5 = 8 

4x = 40
x = 10

15) x + 3 = - 2x + 12

x + 2x = 12 - 3
3x = 9
x = 3

16) 5x = 30 

x = 30/5
x = 6 

17) 5x + 3 - x = -4

4x = -7
x = -7/4 

18) 6x + x - 1 = 6

7x = 7
x = 1

19) 4x/3 = 4

4x = 12
x = 3

20) x + x = 6

2x = 6
x = 3

21) 5x - x = 8 

4x = 8
x = 2

22) x + x = 10 

2x = 10
x = 5

23) 3x/4 = 5

3x = 20
x = 20/3