Respostas

2014-08-11T20:16:06-03:00
1+6x-8=15-3x-4
6x+3x=15-4-1+8
9x=18
x=18/9
x=2
2014-08-11T20:17:50-03:00
1 + 6x - 8 = 15 - 3x - 4
6x - 7 = -3x + 11
6x + 3x = 11 + 7
9x = 18
x = 18/9
x = 2