Sagot :
Bonjour
1)
5/12 = (5 x 5) / (12 x 5) = 25/60
- 3/20 = (- 3 x 3) / (20 x 3) = - 9/60
- 4/15 = (- 4 x 4) / (15 x 4) = - 16/60
6/- 5 = (6 x 12) / (- 5 x 12) = 72/-60 = - 72/60
3/4 = (3 x 15) / (4 x 15) = 45/60.
- 9/2 = (- 9 x 30) / (2 x 30) = - 270/60
60/20 = (60 x 3) / (20 x 3) = 180/60
2)
15/12 = (3 x 5) / (3 x 4) = 5/4
- 18/27 = (9 x - 2) / (9 x 3) = - 2/3
- 16/24 = (8 x - 2) / (8 x 3) = - 2/3
Réponse :
Explications étape par étape
60:12=5
5*5/12*5=25/60
60:20=3
-3*3/20*3=-9/60
60:15=4
-4*4/15*4=-16/60
60:-5=-12
6*-12/-5*-12=-72/60
60:4=15
3*15/4*15=45/60
60:2=30
-9*30/2*30=-270/60
60:20=3
3*60/3*20=180/60
15:3/12:3=5/4
-18:9/27:9=-2/3
-16:4/24:4=-4/6=-2/3