Réponses

2012-05-17T18:07:11+02:00

27-8x=33

-8x=33-27

-8x=6

x=-6/8

x=-3/4

 

32-20x=5x+18

-20x-5x=18-32

-25x=-14

x=14/25

 

-2(3x-8)=-9+5x

-6x+16=-9+5x

-6x-5x=-9-16

-11x=-25

x=25/11

 

FIN