Bonjour
A = - 3/5 - 2/3 : (3/2 + 1) x (2 - 6/5)
A = - 3/2 - 2/3 : [3/2 + (1 x 2) / (1 x 2)] x [(2 x 5) / (1 x 5) - 6/5]
A = - 3/2 - 2/3 : (3/2 + 2/2) x (10/5 - 6/5)
A = - 3/2 - 2/3 : 5/2 x 4/5
A = - 3/2 - 2/3 x 2/5 x 4/5
A = - 3/2 - 4/15 x 4/5
A = - 3/2 - 16/75
A = (- 3 x 75) / (2 x 75) - (16 x 2) / (75 x 2)
= - 225/150 - 32/150
= - 257/150.
