Réponse :
bonjour
3x-11 =7x+2
3x-11-3x = 7x+2-3x
-11 = 4x+2
-11-2=4x+2-2
-13= 4x
-13/4 = x
-3.25 =x
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Réponse :
bonjour
3x-11 =7x+2
3x-11-3x = 7x+2-3x
-11 = 4x+2
-11-2=4x+2-2
-13= 4x
-13/4 = x
-3.25 =x