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Sagot :

ARSENEMATHYS

Réponse:

a+b = 5+2

( a + b)xc = ( 5+2)x8

(axc)+(bxc) = ( 5x8)+(2x8)

a+b = 4+7

( a + b)xc = ( 4+7 ) x 9

(axc)+(bxc) = (4x9)+(7x9)

a+b = 2,5+4,5

( a + b)xc = (2,5+4,5)x6

(axc)+(bxc) = (2,5x6)+(4,5x6)

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