Respostas

2014-07-07T16:39:05-03:00
Y=-2x+6
-2x+6=0
-2x=-6    (-1)
2x=6
x=6/2
x=3
2014-07-07T16:41:31-03:00
-2x + 6=0
-2x= -6 ×(-1)
2x=6
x=6÷2
x=3