Question 77290
2/5-y/(y-2)

The least common denominator is 5(y-2)
Rewrite the fractions with the lcd as the denominator:

= 2(y-2)/lcd - y*5/lcd

=[2y-4-5y]/lcd

=[-3y-4]/lcd

=[-3y-4]/[5(y-2)]

Cheers,
Stan H