Respuestas

2012-10-26T08:38:17+02:00

=(8)*(5) + (2*3+7) - (2*(5+2)-3) + (((10)/(2)+9)-3)

 

= 40 + (6+7) - (2*7-3) + ((5+9)-3)

 

= 40 + 13 - (14-3) + (14-3)

 

=40 + 13 - 11 + 11  

 

= 53