Respostas

2014-08-17T21:17:19-03:00
-3x+2=0
-3x= 2
x= 2/-3

-3x+2=11
-3x= 11-2
-3x=9
x=9/-3
x= -3

-3x+2=-1/2
-3x= (-1/2) -2
x=-5/2 :-3
x=5/6
3 4 3