Respostas

2013-08-14T14:44:35-03:00
Sidônio=x+1
Roberto=1,50+x
Francisco=x

x+1+x+1,50+x=11,50
x+x+x=11,50-1,50-1
3x=9
x=9/3
x=3
 
Francisco=3
Roberto=3+1,50 roberto=4,50
Sidônio=4,50+1 sidônio= 5,50