Bonjour,
-( x+5)= -x-5
-(x-2)= -x+2
-(4a-9)= -4a+9
-(-3a+8) = 3a-8
Bonne journée
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Bonjour,
-( x+5)= -x-5
-(x-2)= -x+2
-(4a-9)= -4a+9
-(-3a+8) = 3a-8
Bonne journée