решите уравнение 1-7(4+2х)=-9-4х
1-7(4+2x)=-9-4x
1-28-14x=-9-4x
-14x+4x=-9+28-1
-10x=18
x=-1.8
1-7(4+2х)=-9-4х
1-28-14х=-9-4х
-14х+4=-9-1+28
-10х=-10+28
-10х=18
-х=1,8/-1
х=-1,8