Combine and show all work please

Question

3/2y+2/y-1-2/y

Answer 1

LCD = 2y

3/(2y) + 4/(2y) - 2y/(2y) -4/(2y)

= (3-2y)/(2y)

or do you mean
3/(2y) +2/(y-1) -2/y ???

in that case LCD = [2y(y-1)]

3(y-1)/[2y(y-1)] +4y/[2y(y-1)]-4(y-1)/[2y(y-1)]
or
[3(y-1)+4y -4(y-1)]/[2y(y-1)]

[3y+1]/[2y^2-2]