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Sagot :

Réponse:

A=3×x+2

B=a×b-4

C=5×(2×x-7)

D=2×a×(2+8)

E=3×a-5×b

F=a×b+3×7×a

G=b-a+7×(3×x+7)

H=a+a-7×b+1

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