simplifie et calcule 45/14x49/60 45/26x65/72 12,4/6x8 0,55x2/11 2,5/3x3/0,5 5,6x9/0,7 merci beaucoup

45 x 49 / 14 x 60 = 9 x 7 / 2 x 12 = 63 / 24 = 21/8

45 x 65 / 26 x 72 = 2925 / 1872 = 25/16

12.4  : 48 = 0.2583333..

0.55 x 2 = 1.1/11 = 0.1

2.5 x 3 / 3 x 0.5 = 7.5 / 1.5 = 5

5.6 x 9 = 50.4 /0.7 = 72

a)45 x 49 / 14 x 60

= 9 x 7 / 2 x 12

= 63 / 24

= 21/8

b)45 x 65 / 26 x 72

= 2925 / 1872

= 25/16

c)12.4  : 48

= 0.2583333..

d)0.55 x 2 =

1.1/11

= 0.1

e)2.5 x 3 / 3 x 0.5

= 7.5 / 1.5

= 5

f)5.6 x 9 =

50.4 /0.7

= 72

en éspèrant t'avoir aidé:)