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2014-09-10T18:08:30+02:00
Exercice - 24 :

A = ( 2/5 + 1/3 ) : 11/3
= ( 6/15 + 5/15 ) : 11/3
= 11/15 : 11/3
=11/15 x 3/11
= 33/165
= 1/5

B = 22/15 : 4/9 - 5/2
= 22/15 x 9/4 - 5/2
= 198/60 - 5/2
= 198/60 - 150/60
= 4/5