1) Mise en equation de probleme

Au supermarche , odin achete trois DVD au meme prix et cinq CD a cinq euro chacun.
Il paye 47,50 euro
On note x le prix d'un DVD
Donner une equation permettant de trouver le prix de chaque DVD

2) Resolution equation

a) 2x + 3 = 5
b) -3 + 5x = 12
c) 1 - 2x =1
d) -3x - 5 = -8
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