Réponses

2013-03-10T18:02:56+01:00

24x9x72x121:36x33x64=110398464

81:63+(4-2:14)=5,14

 

apres je sais pas

 

Meilleure réponse !
2013-03-10T18:19:19+01:00

A = j'ai simplifié ce qui pouvait l'être

tu as : 12 x4x72x121/9x33x32 = 418176/9504 = 44

 

B = 840/128 -1/15 = 15120/ 2304 - 128/2304 = 14992/2304 = 937/144

 

C = 35/25 = 7/5

   = 24/15 + 7/5 = 24/15 + 21/15 = 45/15 = 3

il reste donc 3 x 20/33 = 60/33

 

D = 81/63 = 9/7 et 2/14 = 1/7

9/7  + 28/7 - 1/7 = 36/7

 

E  = 5/6-5/4 = 10/12-15/12 = -3/12

1/2 +2/3 = 3/6 +4/6 = 7/6

-3/12 X 7/6 = -21/72  = -7/24

il reste 56/15 X -7/24 = 392/-360 = - 196/180 = -98/90 = -49/45