Respostas

2014-08-27T11:36:12-03:00
-3x+2=0
-3x= -2
x= -2/-3
x= 0,666...

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

-3x+2= -1/2
-3x = (-1/2) -2
-3x = - 5/2
x= (-5/2) / -3
x = 5/6
x= 0,8333...