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Sagot :

VINS

bonjour

P = y + y + 2 + x + y + 2 + x + y = 2 x + 4 y + 4

- ( 7 x + 4 ) + ( 9 x - 10 )

= - 7 x - 4 + 9 x - 10

= 2 x - 14

7 ( 2 x + 3 ) = 56

14 x + 21 = 56

14 x = 56 - 21

14 x = 35

x = 35/14

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