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nath17
@nath17
January 2021
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Je n ai pas tout compris merci
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batzaasafaep7p3ka
1)
=x+2x+3x+x+4x+3x
=14x
2)
14x=21 <=> x=21/14
3)
aire=3x*4x-(2x*3x)=12x-6x=6x mais pour 21 cm on remplace x par 21/14 trouvé en 2) cela fait: aire=6*21/14=63/7=9
4)
à toi de jouer
5)
déjà fait en 3)
voilà!!
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peut tu me corriger l'exercice N'2 et N'3 merci
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Lista de comentários
=x+2x+3x+x+4x+3x
=14x
2)
14x=21 <=> x=21/14
3)
aire=3x*4x-(2x*3x)=12x-6x=6x mais pour 21 cm on remplace x par 21/14 trouvé en 2) cela fait: aire=6*21/14=63/7=9
4)
à toi de jouer
5)
déjà fait en 3)
voilà!!