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Bonjour ex 24 p 102 developper et reduire
a.13 + ( x - 6 )
b.- 5 - ( 4 - 2x )
c.10 - ( x + 3 ) + ( 3x + 6 )
d.( 5 + 2x ) - (- 7 - 7x )
e.x - 8 - ( 2 + 4x - ( 9 - 5x ) )

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