Réponses

2013-12-24T15:59:03+01:00
(6a+8)-(4a+2)
6a+8-4a-2=2a+6

(7b-2)+(3b-5)
7b-2+3b-5=10b-7
  • Utilisateur Brainly
2013-12-24T15:59:06+01:00
(6a+8)-(4a+2)
=6a+8-4a-2
=2a+6

(7b-2)+(3b-5)

=7b-2+3b-5
=10b-7