Réponses

  • x22
  • Modérateur Junior
2014-10-05T11:33:27+02:00
Bonjour,

R=3x(-5)+7
=-(3x5)+7
=-15+7
=-8

S=7x(-5+3)
=7x(-2)
=-(7x2)
=-14

T=7x(-5)x3
=-(7x5x3)
=-(35x3)
=-105
2014-10-05T11:34:34+02:00
R = (-15) + 7
    = (-8)

S = 7 x (-2)
   = (-14)

T = (-35) x 3
   = (-105)