Réponses

  • Utilisateur Brainly
2014-04-21T16:08:56+02:00
3(x-2)+2x
=3x-6+2x
=5x-6

-3(x+2)+5(x-3)
=-3x-6+5x-15
=2x-21

(-7+a)(-4)+6(11-a)+5a
=28-4a+66-6a+5a
=-5a+94

-2(4b-5)-(2+3b)+3(4b-1)
=-8b+10-2-3b+12b-3
=b+5