Sagot :
bonjour
I = ( 9/15 + 3 /10) : 6 /5
I = ( 18/30 + 9/30) : 6 /5
I = 27/30 x 5 /6
I = 135/ 180 = 3 / 4
J = 12/7 - 4 /7 x 35/12
J = 12/7 - 140 / 84
J = 144/84 - 140 /84
J = 4/84 = 1 /21
K = ( 4/5 + 7/10) : ( 5/6 - 5 /8 )
K = ( 8/10 + 7 /10 ) : ( 20/24 - 15/24)
K = 15/10 : 5/24
K = 15/10 x 24 /5
K = 360 / 50 = 36/5
L = 6/5 + 21/5 : 14/15
L = 6 /5 + 21/5 x 15/14
L = 6/5 + 315/70
L = 6 /5 + 9 / 2
L = 12/10 + 45/10
L = 57/10