Ответы и объяснения

2013-12-26T17:26:28+00:00
1- ((3х-1-х)/9)=х/2-(6х-10+7х)/6
(9-2х+1)/9=(3х-6х+10-7х)/6
(10-2х)/9=(10-10Х)/6
(10-2х)/9=(5-5х)/3
10-2х=-15х+15
13х=5
х=5/13