(2х + 1) 5 1/3
------------- = ---------------
6 2 10/11
(2х + 1) * 2 10/11 = 6 * 5 1/3
(2х + 1) * 32/11 = 6 * 16/3
2х * 32/11 + 32/11 * 1 = 2 * 16
64/11х + 32/11 = 32
64/11х = 32 - 32/11
64/11х = 352/11 - 32/11
64/11х = 320/11
х = 320/11 : 64/11
х = 320/11 * 11/64
х = 5/1 * 1/1
х = 5