Question 6628
1) Determine a common denominator - 3y will do in this case.
2) {{{ (3)/(y) - (2y+1)/(3y) + (1)/(3) = (9 - (2y + 1) + y)/3y }}}
3) {{{ (8 - y)/3y }}}
4) {{{ 8/3y - 1/3 }}}

Hope that helps.
Regards,
-Mike