Réponses

2013-11-22T16:39:45+01:00
Bonjour.

A)

-3(x-10)-2x = -5x+15 = -5(x+3)

si x=100: -515
si x=-5: 10

B)

-6(x-5)+x = -5x+30 = -5(x+6)

si x=100: -530
si x=-5: -5