Sagot :
PS: la barre / représente la barre des fractions
A= 1/ 2 - 1 / 6=3/6-1/6=2/6=1/3
B= 7/ 2 - 5 /4=14/4-5/4=9/4
C = 5/ 9 - 1 /3=5/9-3/9=2/9
D= 13/ 2 - 1/ 4=26/4-1/4=25/4
E= 10/18 - 1/ 6=10/18-3/18=7/18
F = 7 /3 - 13/15=35/15-13/15=22/15
G = 7 - 20/ 3=21/3-20/3=1/3
H = 27/ 4 - 2=27/4-8/4=19/4
I = 17/7 - 2=17/7-14/7=3/7
J = 23 - 308 /14=23-22=1/1
A= 1/ 2 - 1 / 6=3/6-1/6=2/6=1/3
B= 7/ 2 - 5 /4=14/4-5/4=9/4
C = 5/ 9 - 1 /3=5/9-3/9=2/9
D= 13/ 2 - 1/ 4=26/4-1/4=25/4
E= 10/18 - 1/ 6=10/18-3/18=7/18
F = 7 /3 - 13/15=35/15-13/15=22/15
G = 7 - 20/ 3=21/3-20/3=1/3
H = 27/ 4 - 2=27/4-8/4=19/4
I = 17/7 - 2=17/7-14/7=3/7
J = 23 - 308 /14=23-22=1/1
A = 1/2 - 1/6
= 3/6 - 1/6
= 2/6
= 1/3
B = 7/2 - 5/4
= 14/4 - 5/4
= 9/4
C = 5/9 - 1/3
= 5/9 - 3/9
= 2/9
D = 13/2 - 1/4
= 26/4 - 1/4
= 25/4
E = 10/18 - 1/6
= 10/18 - 3/18
= 7/18
F = 7/3 - 13/15
= 35/15 - 13/15
= 22/15
G = 7 - 20/3
= 1/3
H = 27/4 - 2
= 19/4
I = 17/7 - 2
= 3/7
J = 23 - 308/14
= 1
= 3/6 - 1/6
= 2/6
= 1/3
B = 7/2 - 5/4
= 14/4 - 5/4
= 9/4
C = 5/9 - 1/3
= 5/9 - 3/9
= 2/9
D = 13/2 - 1/4
= 26/4 - 1/4
= 25/4
E = 10/18 - 1/6
= 10/18 - 3/18
= 7/18
F = 7/3 - 13/15
= 35/15 - 13/15
= 22/15
G = 7 - 20/3
= 1/3
H = 27/4 - 2
= 19/4
I = 17/7 - 2
= 3/7
J = 23 - 308/14
= 1