Réponses

2013-06-09T15:06:47+02:00

A) 5*2x + 5*-8 = 10x -40

B) -7*8 -7*3y = -56 - 21y

C) 6*-z + 6*3 = -6z + 18

2013-06-09T15:07:34+02:00

A)  5(2x-8)

=   10x - 40

 

B) -7 (8+3y)

= -56 - 21y

 

C) 6 (-z+3)

=  -6z + 18