Réponses

2012-11-30T07:50:48+01:00

8-2(4x+1)

=8-8x-2

=-8x+6

 

5x-3(x+1)

=5x-3x-3

=2x-3

 

A=2(3-2x)+3(4x-1)

A=6-4x+12x-3

A=8x+3

 

;-)