Réponses

2012-07-17T13:48:20+02:00

(12/7)/(8/28) + 5/4 - 20/7 + 1 = 

(12/7) / ( 2/7 ) + 5/4 - 20/7 + 1  =

( 12/7 ) * ( 7/2 ) + 5/4 - 20/7 + 1 =

12/2 + 5/4 - 20/7 + 1  =

6 + 1  + 5/4 - 20/7 =

7  + 5/4 - 20/7 =

196/28 - 80/28 + 5/4 =

116/28 + 5/4 =

116/28 + 35/28 =

151/28