Réponse :
A = (5x+2) - (6x+4)
A = 5x+2 - 6x-4
A = -x-2
B = (-3x-4) - (-8x+3)
B = -3x-4 + 8x-3
B = 5x -7
C = -(5x+3x) + (-x+4)
C = -5x-3x -x +4
C = -9x+4
D = (-5x+3) + (4x-5)
D = -5x+3+4x-5
D = -x-2
E = 2(3a-5) - 6(4a+3)
E = 6a-10-24a-18
E = -18a-28
F = 5(-4a+2) + 2(3a-4)
F = -20a+10+6a-8
F = -14a+2
Explications étape par étape
