Réponses

2013-11-11T19:22:16+01:00
-100/60*(-6/400)
=1/4*1/10
=1/40

-100*11/300*(-5/22)
=1/3*1/2*5
=5/6
hein ?
la / c'est la barre de fraction
le * c'est le signe multiplié
2013-11-11T19:55:29+01:00
= -100/60 x (-6/400)
= 600/24 000
= 1/40 <== Simplifier

= -100 x 11/300 x (-5/22)
= -11/3 x (-5/22)
= 5/6 <== Simplifier