Les deux premier exercise s’il vous plaît pour mon devoir maison

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