Réponses

2012-09-07T17:02:35+02:00

A= 3 + ( 5 /7 - 9 /14 )

A = 3 + ( 10/14 - 9/14 )

A = 3 + 1 /14

A = 3/1 + 1/14

A = 42/14 + 1/14

A = 43/14