а)7-3х-4(3-1.5х)<0
-6(1+2.5х)-10х-4>0
7-3х-12+6х<0
-6-15х-10х-4>0
3х<5
-25х>10
х<5/3
х>-0.4
б)2(1.5х-1)-(х+4)≥0
-(2-х)-0.75≤0
3х-2-х-4≥0
-2+х-0.75х≤0
2х≥6
0.25х≤2
х≥3
х≤8
а)7-3х-4(3-1.5х)<0
-6(1+2.5х)-10х-4>0
7-3х-12+6х<0
-6-15х-10х-4>0
3х<5
-25х>10
х<5/3
х>-0.4
б)2(1.5х-1)-(х+4)≥0
-(2-х)-0.75≤0
3х-2-х-4≥0
-2+х-0.75х≤0
2х≥6
0.25х≤2
х≥3
х≤8