Respostas

2014-02-06T13:10:19-02:00
3(x-1)+4x≤-10
R= 3x-3+4x
≤-10
3x+4x
≤-10+3
7x
≤-7
x
≤ 7

6(x-1)
≤1-2(3-x)
R= 6x-6
≤1-6+2x
6x-2x
≤6+1-6
6x-2x
≤6+1-6
4x
≤1
x
≤ 1/4

acho que deve ser assim .