Respostas

2014-04-19T23:21:04-03:00
X + 1 + 10 - 5x=7x +19 
x - 5x -7x=19 - 10 -1 
(-1). - 11x=8 .(-1)
11x=-8
x=-8/11
2014-04-19T23:28:26-03:00
(x + 1) + 5(2 - x) = 7x + 19
x + 1 + 10 - 5x = 7x + 19
x - 5x - 7x = 19 - 1 - 10
- 11x = 8
x = -8/11