Respostas

2013-08-11T14:52:55-03:00
3(4x-1)+9-4(x+1)=4x
12x-3+9-4x-4-4x=0
12x-8x-3+5=0
4x+2=0
4x=-2
x=-2/4
x=-1/2
1 4 1
2013-08-11T16:14:03-03:00
3(4x-1)+9-4(x+1)=4x
12x- 3 + 9 - 4x - 4 - 4x = 0
8x - 4x + 6 - 4 = 0
4x - 2 = 0
4x = 2
x = 2

S =  \{} 2 \}
1 5 1