Question

x - 2y = 1 for y

Answer 1

X-2y=1
-x. -x
2y=1-x/2 divide by 2
y= -x+1/2 ... I hope it's correct

Answer 2

\[x-2y=1\]
\[2y+1=x\]
\[2y=x-1\]
\[y=\frac{1}{2}x-\frac{1}{2}\]