1-7(4+2х)=-9-4х
1-28-14х=-9-4х
-27-14х=-9-4х
-14х+4х=-9+27
-10х=18
х=-9/5
х=-1,8
1-2(5+3х)=15
1-10-6х=15
-9-6х=15
-6х=15+9
-6х=24
х=-4
6/х+8 = - 3/4
24=-3(х+8)
8=-(х+8)
8=-х-8
х=-8-8
х=-16
1-7(4+2х)=-9-4х
1-28-14х=-9-4х
-27-14х=-9-4х
-14х+4х=-9+27
-10х=18
х=-9/5
х=-1,8
1-2(5+3х)=15
1-10-6х=15
-9-6х=15
-6х=15+9
-6х=24
х=-4
6/х+8 = - 3/4
24=-3(х+8)
8=-(х+8)
8=-х-8
х=-8-8
х=-16