Réponse :
Bonsoir;
Explications étape par étape
3x+4= 5x+1
3x -5x = 1-4
-2x = -3
x = 3/2
7x -3 = 3x -1
7x -3x = -1 +3
4x = 2
x 2/4 = 1/2
-x +8 = 5x -4
-x -5x = -4 -8
-6x = -12
x = 12/6
x = 2
-x +3 = -3x -5
-x +3x = -5 -3
2x = -8
x = -4
