Exercice de maths: A=3/7 x (7/3-5/6)
A= 3/7 x (7/3-5/6)
= 3/7 x (14/6-5/6)
= 3/7 x 9/6
= 3/7 x 3/2
= 9/14
= 3/7 x (7x2/3x2-5/6)
= 3/7 x (14-5/6)
= 1/7 x 9/2
