Réponse :
bonjour
13/5-3/5=10/5=2
3/7+4/7=7/7=1
3/8-7/8=-4/8=-1/2
8/5-9/15=24/15-9/15=15/15=1
1/4-6/8=2/8-6/8=-4/8=-1/2
9/10+22/20=18/20+22/20=40/20=2
Explications étape par étape :
Bonsoir,
13/5 - 3/5 = 10/5 =2
3/7 + 4/7 = 7/7 = 1
3/8 - 7/8 = -4/8 = -1/2
8/5 -9/15 = 24/15 - 9/15 =15/15 = 1
1/4- 6/8 = 2/8 -6/8 = -4/8 =-1/2
9/10+22/20 = 18/20 +22/20 = 40/20 =2
