Réponses

2013-12-15T14:31:38+01:00
E=-11-3x(-2)+5
E=-11-(-6)+5
E=-11+6+5
E=0

-11-3x(-2+5)=-11-3x(3)=-11-9=-20
(-11-3)x(-2)+5=(-14)x(-2)+5=28+5=33
-11-[3x(-2)+5]=-11-(-6+5)=-11-(-1)=-11+1=-10