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Bonsoir exercice de maths simplifier et reduire quand c'est possible:
A=15×A

B=15+A

C=3A+2A

D=3A×2A

E=x×x

F=x+x

G=x2+x

H=x-x

I=x²×x

J=2x+8+5x

K=x-5×3+7x

L=3×2+5x+7x²-2x

M=x²×x³​

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