Решите ) -0.6х-(1.5-2х)=3(-0.1-0.2х) и 2 2/3: (3х+5\7)=1 1/6: (х-1 1/4) огромное)) =3

-0.6х-(1.5-2х)=3(-0.1-0.2х) 
-0.6х-1.5+2х=-0.3-0.6х
-0.6х+2х+0.6х=-0.3+1.5
2х=1.2
х=0.6

 2 2/3:(3х+5\7)=1 1/6:(х-1 1/4)
8/3:(3х+5\7) = 7/6:(х-5/4)
8/3:(3х+5\7) - 7/6:(х-5/4)=0
8/3(х-5/4)-7/6(3х+5/7)=0
8/3х-10/3-7/18х-5/6=0
41/18х=25/6
41/3х=25
х=75/41