Réponses

2014-02-25T20:02:56+01:00
A=3/7*(7/3-5/6)
=3/7*(14/6-5/6)
=3/7*9/6
=1/7*9/2
=9/14

B=3/7*7/3-5/6
=1-5/6
=6/6-5/6
=1/6

C=12*(1/3-1/6)
=12*(2/6-1/6)
=12*1/6
=2

D=12*1/3-1/6
=12/3-1/6
=24/6-1/6
=23/6