#1
-2*(1/4+x)-6*(1/16-2x)=3x
-1/2-2x-3/8+12x=3x
12x-2x-3x=3/8+1/2
7x=3/8+4/8
7x=7/8
x=1/8
Ответ:1/8.
#2
1/3x+7/18-1(ц)5/24-2(ц)1/18+3/12x=
=1/3x+7/18-29/24-37/18+3/12x=
=4/12x+3/12x+7/18-37/18-29/24=
=7/12x-30/18-29/24=7/12x-5/3-29/24=
=7/12x-40/24-29/24=7/12x-69/24=
=7/12x-23/8=7/12x-2(ц)7/8
#3
15/22-(4-1(ц)5/6):x=1(ц)5/33
15/22-4/x+11/6x=38/33
-25/6x+11/6x=38/33-15/22
-14/6x=836-495/726
-7/3x=341/726
x=-341/726*3/7
x=-341/1694