1) (7х+2)/6 - х ≤ (5х+4)/3 - 4х
(7х+2)/6 - х - (5х+4)/3 + 4х≤0
(7х+2)/6 - 2·(5х+4)/6 + 6·3х/6≤0
(7х+2-10х-8+18х)/6≤0
(15х-6)/6≤0
15х-6≤0
15х≤6
х≤6/15
х≤0,4
2)(4х+1)/3 - х>(х+1)/2 - (х-3)/4
(4х+1)/3 - 3х/3>2·(х+1)/4 - (х-3)/4
(4х+1-3х)/3>(2х+2-х-3)/4
(х+1)/3>(х-1)/4
4·(х+1)/12 - 3·(х-1)/12>0
(4х+4-3х-3)/12>0
(х+1)12>0
х+1>0
х>-1