Respostas

2014-08-28T14:29:04-03:00
5x+3(x-4)=
5x+3x-12=
8x-12=
8x=12
8x/8=12/8
x=3/2 ou 1,5
2014-08-28T14:37:17-03:00
5x+3(x-4)=0
5x+3x-12=0
8x=12
x=12/8
x=3/2
x=1,5