Réduire les expressions suivantes: A=3x+5+12x+7
 B=4-6y-3+4y
 C=-2x-7+5x-7
D=+2x-7+5x+7
E=15-y-5+3y
F=-6x+7-6x-2

J'ai trouvé:
a=15x+12
b=10y+1
c=3x-14
d=+7x
e=2y+10
f=-12x+5
Est ce les bons résultats.Merci d'avance
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