Respostas

2013-11-28T23:58:53-02:00
-x + 1/3 = 4/3
-x = 4/3 - 1/3
-x = 3/3 .(-1)
x = -3/3
1 5 1
2013-11-29T01:05:27-02:00
- x + 1/3 = 4/3
mmc da 3.
- 3x/3 + 1/3 = 4/3
cancele os denominadores (3).
- 3x + 1 = 4
- 3x = 4 - 1
- 3x = 3 .(-1)
3x = - 3
x = - 3/3
x = - 1
1 5 1