Respostas

2013-07-04T22:04:29-03:00
8x-7=6x-1
8x-6x=-1+7
2x=6
x=6/2
x=3
2013-07-04T22:36:16-03:00
8x-7=6x-1
8x-6x=-1+7
2x=6
x=6/2

x=3