Réponses

2014-04-03T16:41:51+02:00
Bonjour,
A) -4(8x-3)+6(-5x+3) =
-32x + 12 - 30x +18=
-32x - 30x + 30=
-62x +30

B) 5(1.1t+3.5) - 8(0.4t-3) =
5.5t + 17.5 - 3.2t  24 =
23t - 3.2t + 24=
19.8t +24