Bonsoir;
a)
5x +45
b)
12x² -24x
c)
2x+30+7x-14
= 9x +16
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Bonsoir;
a)
5x +45
b)
12x² -24x
c)
2x+30+7x-14
= 9x +16
Il faudrait apprendre le vocabulaire mathématique...