Bonjour
B = (3/2 - 5/4) x 2/3 - (7/6 - 1)
B = [(3 x 2) / (2 x 2) - 5/4] x 2/3 - [7/6 - (1 x 6) / (1 x 6)]
B = (6/4 - 5/4) x 2/3 - (7/6 - 6/6)
B = 1/4 x 2/3 - 1/6
B = 2/12 - 1/6
B = (2 x 1) / (2 x 6) - 1/6
B = 1/6 - 1/6
B = 0.
