bonjour Compléter . exercice 1 et 2 merci​

Bonjour,

exercice 1

10/6 = 20/12

10/5 = 70/35

90/70 =9/7

40/10 = 4/10

8/10 = 64/60

8/20 = 2/5

8/4 = 40/20

2/5 = 14/35

Exercice 2

(14*27)/( 27*10)

=  14/10 ( on simplifie par 27)

= 7/5

(5*36)/(24*5)

= 36/24 ( on simplfie par 5)

= 18/12 = 9/6= 3/2

(32*9) /(21*64)

= 288/ 1 344

= 144/672 = 72/33 = 24/11

(7*80)/ (50*21) =

= (7*8)/ (5*21)  ( on divise par 10)

= 56/105 = 8/15 ( on divise par 7)