Bonjour
Calculer et simplifier lorsque c'est possible
I= 2/3 x -7/5 - 9/10
I = - 14/15 - 9/10
I = (- 14 x 2) / (15 x 2) - (9 x 3) / (10 x 3)
I = - 28/30 - 27/30
I = - 45/30
I = (15 x - 3) / (15 x 2)
I = - 3/2
J= 13/-11 x 5/2 - 3/2 x 7/9
J = - 65/22 - 21/18
J= (65 x 9) / (22 x 9) - (21 x 11) / (18 x 11)
J = 585/198 - 231/198
J = 354/198
J = (6 x 59) / (6 x 33)
J = 59/33
K= 13/14 - 1/15 x 10/7
K = 13/14 - 10/105
K = (13 x 15) / (14 x 15) - (10 x 2) / (105 x 2)
K = 195/210 - 20/210
K = 175/21
K = (35 x 5) / (35 x 6)
K = 5/6
L= ( -3/4 - 2/3 ) x 5/-8
L = [(- 3 x 3) / (4 x 3) - (2 x 4) / (3 x 4)] x - 5/8
L = (- 9/12 - 8/12) x - 5/8
L = - 17/12 x - 5/8
L = 85/96.
