Réponse:
Bonjour !
Explications étape par étape:
9x - 8 - (4x - 1) = x + (2x - 11)
9x-8-4x+1 = x+2x-11
5x-7 = 3x-11
5x-3x = -11+7
2x = -4
x = -4/2
x = -2
(4x + 2) + (7x - 4) = (2x - 3) - (4x - 9)
4x+2+7x-4 = 2x-3-4x+9
11x-2 = -2x+6
11x+2x = 6+2
13x = 8
x = 8/13
Bonne journée :)
