Respostas

2013-11-23T15:46:25-02:00
4(x-1) = 2(x-6)
4x - 4 = 2x - 12
4x -2x = 4 - 12
2x = -8
x = -8/2
x = -4
2013-11-23T15:47:40-02:00
4(x-1)=2(x-6)
4x-4=2x-12
4x-2x=-12+4
2x= -8
x= -8/2
x= -4
S: [-4]