Sagot :

Bjr

5x-6 = 39

5x = 39 + 6

5x = 45

x = 45/5=9

x/2 + 11 = 13

x/2 = 13-11

x/2 = 2

x = 2*2

x = 4

- 2x +1 =-5

-2x =-5-1

-2x =-6

x =-6/-2

x = 3

3(2x-5)+1=28

3(2x-5)=28-1

2x-5= 27/3

2x = 9 + 5

2x = 14

x = 14/2 = 7

3x + 2 = x- 10

3x- x =-10-2

2x =-12

x =-12/2 =-6

5x+3 = 2x-3

5x- 2x =-3-3

3x =-6

x =-6/3

x =-2

7x-6=2x-46

7x-2x =-46+6

5x =- 40

x =-40/5 =-8

4x + 1- x +6= 22

3x = 22-7

3x=15

x = 15/3 = 5

-5x-6=2(x+7)+1

-5x- 6 = 2x+14+1

-5x-2x = 6 + 14+1

-7x = 21

x =-7/21 =-3

Bonne soirée