a)
2(x-2)-3=\frac{x-3}{3}|*3
6(x-2)-9=x-3
6x-12-9=x-3 | -6x+3
-21+3=x-6x
-18=-5x|/(-5)
x=3,6
d)
2( \frac{1}{2} -x)-8=x-2(x+2)
1-2x-8=x-2x-4| +2x+4
-7+4=x
x=-3
c)
(\frac{1}{2}x+1)-( \frac{1}{4}x-3)=(2x- 1\frac{1}{2})-(\frac{3}{4}-1\frac{1}{2})
\frac{1}{2}x+1- \frac{1}{4}x+3=2x- \frac{3}{2}-\frac{3}{4}+\frac{3}{2}
\frac{1}{2}x- \frac{1}{4}x+4=2x-\frac{3}{4}| *4
2x-x+16=8x-3| -8x-16
x-8x=-3-16
-7x=-19