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Sagot :

VINS

bonjour

A = 2 x -  x /5

A =  10 x /5 - x /5

A = 9 x /5

B = 3 x /2 - 5

B = 3 x /2 - 10/2

C = 5 x ( 4 x - 1 ) / 3

C = 15 x /3 * ( 4 x - 1 ) / 3

C = ( 60 x - 15 x ) / 9

C =  45 x /9

=  5 x

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