Réponses

2012-11-04T19:43:33+01:00

A=7-[-2x(3-4)+4]        

= 7 - [ -2*(-1) + 4]

= 7 - (2+4)

= 7 - 6

=1

 

B= 8/5 - 2/5 : 2/3

B= 8/5 - 2/5 x 3/2

B = 8/5 - 3/5

B = 5/5

B = 1

 

donc A = B = 1

 

En espérant t'avoir aidé