Respostas

2013-10-23T10:16:06-02:00
6(x+5)>4(x-7)
6x+30>4x-28
6x+30-4x+28<0
2x+58<0
2x>58
x>58/2
x>29
2013-10-23T10:17:15-02:00
6x + 30> 4x - 28
6x -  4x  > -28 - 30
2x > -58
x > -58/2
x > -29