3х + 4 3/5 = 6 1/9
3х = 6 1/9 - 4 3/5
3х = 6 5/45 - 4 27/45
3х = 5 50/45 - 4 27/45
3х = 1 23/45
х = 1 23/45 : 3
х = 68/45 : 3 = 68/45 * 1/3 = 68/135
х = 68/135
10 3/10 - 2х = 8 1/4
2х = 10 3/10 - 8 1/4
2х = 10 6/20 - 8 5/20
2х = 2 1/20
х = 2 1/20 : 2
х = 41/20 * 1/2
х = 41/40 = 1 1/40