Respostas

2013-08-24T11:19:16-03:00
A2x+3a-4+b=2a-1-a
2x+3a-4+b=a-1
2x+3a-a+b=-1+4
2x+2a+b=3
2a=3-2x-b
a= 3-2*(x)-b/2
a=3-x-b



S= {3-x-b}
1 5 1