Réponses

2013-10-21T20:19:10+02:00
Bonsoir
A) 7 : 3/5 = 7 x 5/3 = 35/3
B) 7/3 -5/3 x (3+1/4)
7/3 -5/3 x (12/4 +1/4)
7/3 - 5/3 x 13/4
7/3 - 65/4
28 /12 - 195/12 = - 167/12
2013-10-21T20:42:15+02:00
A) 7 / 3/5 = 7 x 5/3 = 35/3
B = 7/3 - 5/3 x ( 3 + 1/4 ) 
= 7/3 - 5/3 x 13/4
= 7/3 - 65/4
= - 167/12 

B) 7/3 -5/3 x (3+1/4) 
7/3 -5/3 x (12/4 +1/4)
7/3 - 5/3 x 13/4
7/3 - 65/4
28 /12 - 195/12 = - 167/12