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Sagot :

MAUDMARINE

Bonsoir

A = (2/5 - 1/3) : (3/4 + 1/6)

A = [(2 x 3) / (5 x 3) - (1 x 5) / (3 x 5)] : [(3 x 3) / (4 x 3) + (1 x 2) / (6 x 2)]

A= (6/15 - 5/15) : (9/12 + 2/12)

A = 1/15 : 11/12

A = 1/15 x 12/11

A = 12/165

A = (3 x 4) / (3 x 55)

A = 4/55.

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