Réponses

  • Utilisateur Brainly
2012-10-08T21:17:17+02:00

Coucou,

 

i=2.5*(8+m)

 = 2.5 * 8 +2.5*m

  = 20 + 2.5m

 

j=3(5x+2)

  = 3*5x + 3*2

  = 15x + 6

 

k=2(x+3)+5

  = (2*x + 2*3) +5

   = (2x + 6) +5

 

l=13+5(3-x)

  = 13 + (5*3 + 5* -x)

  = 13 + (15 -5x)