Réponses

2012-09-23T19:06:52+02:00

Salut,

 

A = 2/3 - 2/3 * 9/5

A = 2/3 - 18/15

A = 10/15 - 18/15

A = -8/15

 

B = [ 1/6 - 1/3 ] / [ 2/5 * 3/4 ]

B = [ 1/6 - 2/6 ] / 6/20

B = (-1/6) / 3/10

B= -1/6 * 10/3

B= -10/18

B = -5/9

 

Bonne continuation.

2012-09-23T19:09:47+02:00

A=2/3-2/3x9/5=2/3-6/15=10/15-6/15=4/15

B=(1/6-1/3):(2/5x3/4)=(1/6-2/6):(6/20)=(-1/6)x(20/6)=(-20/120)=(-2/12)=(-1/6)

 

Voila bonne soirée

By Vetteliste