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CHRYSTINE

bonjour

B=19/4-[1/2-(3/8-1/4)]

=19/4-[1/2-1/8]

=19/4-3/8

=(19*2)/(4*2)-3/8

=38/8-3/8

=35/8

MAUDMARINE

Bonsoir

B=19/4-[1/2-(3/8-1/4)]

B = (19 x 2) / (4 x 2) - [(1 x 4) / (2 x 4) - (3/8 - (1 x 2) / (4 x 2)]

B = 38/8 - [4/8 - (3/8 - 2/8)]

B = 38/8 - (4/8 - 1/8)

B = 38/8 - 3/8

B = 35/8.

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