Verified answer

Réponse :

Bonsoir

Explications :

On regroupe les termes en  x dans un membre et les termes constants dans l'autre,il faut faire attention quand on change un terme de membre, il faut changer le signe .

5x +7 = 2x -2

5x -2x = -7 -2

3x = -9

x = -9/3

x = -3

3x +2 = x -10

3x -x = -2 -10

2x = -12

x = -12/2

x = - 6

2x -5 = 5x +1

2x -5x = 5 +1

-3x = 6

x = -6/3

x = -2

3 - 7x = 3x +2

-7x -3x = -3 +2

-10x = -1

x = 1/10

5x -6 = -x +3

5x +x = 6+3

6x = 9

x = 9/6

x = 3/2

2x - 1/3 = 1

2x = 1+1/3  

2x = 3/3 +1/3

2x = 4/3

x = 4/3 : 2

x = 4/3 * 1/2

x = 4/6

x = 2/3