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Sagot :

Bonjour

Écrire le plus simplement possible :

A = 12 * t = 12t

B = 3(x + 4) = 3 * x + 3 * 4 = 3x + 12

C = 7 * 3 * b = 21b

D = 2 * a * 5 * b = 10 * a * b = 10ab

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