Bonjour
H=(3-2/3) : (4/3*7
)
H = [(3 x 3) / (1 x 3) - 2/3] : 28/3
H = (9/3 - 2/3) : 28/3
H = 7/3 : 28/3
H = 7/3 x 3/28
H = 21/84
H = (21 x 1) / (21 x 4)
H = 1/4
J=2/3/5/6-2/5
J = 2/3 x 6/5 - 2/5
J = 12/15 - (2 x 3) / (5 x 3)
J = 12/15 - 6/15
J = 6/15
J = (3 x 2) / (3 x 5)
J = 2/5
K= (-3/4+1/2
) : (2/5-5/2)
K = [- 3/4 + (1 x 2) / (2 x 2)] : [(2 x 2) / (5 x 2) - (5 x 5) / (2 x 5)]
K = (- 3/4 + 2/4) : (4/10 - 25/10)
K = - 1/4 : (- 21/10)
K = - 1/4 x (- 10/21)
K = 10/84
K = (2 x 5) / (2 x 42)
K = 5/42.
