Bonjour ma petite sœur aurais besoin d’un coup de pouce

Bonjour,

8x -2x = 12 +10

6x = 22

x= 22/6 = 11/3

2(5-x)/6  - 3(2-3x) /6  = 8x/6

(10-2x -6+9x)/6 = 8x/6

(7x +4) /6 = 8x/6

7x+4 = (8x*6)/6

7x+4 = 8x

4 = 8x-7x

x = 4

7+6 -2 +5 = 12x +6x +6x

16 = 24x

x= 16/24

x = 2/3

-3x -6 +5x =7 - 8x  +20

-3x +5x +8x = 7+20 +6

11x = 33

x= 33/11

x= 3

8x-10=2x+12

8x-2x=12+10

6x=22

6x/6=22/6

X=22/6

X=(22÷2)/(6÷2)

X=11/3

(5-x)/3-(2-3x)/2=8x/6

(2(5-x))/3×2 - (3(2-3x))/2×3=8x/6

(10-2x)/6-(6-9x)/6=8x/6

10-2x-6+9x=8x

4+7x=8x

7x-8x=-4

-x=-4

X=4

7-6x+6=-12x+2+6x-5

13-6x=-6x-3

-6x+6x=-3-13

0=-16

Il n'y a pas de solution

-3(x+2)+5x=7-4(2x-5)

-3x-6+5x=7-8x+20

2x-6=27-8x

2x+8x=27+6

10x=33

10x/10=33/10

X=3,3