Question 8637
{{{(1/4)(y-(1/3))-(1/6)(y-3)=2/3}}}
{{{(y/4)-(1/12)-(y/6)+(3/6)=2/3}}} [multiplied first group by 1/4; multiplied second group by -1/6]
{{{(3y/12)-(1/12)-(2y/12)+(6/12)=8/12}}} [made all fractions have common denominator of 12]
{{{(y/12)-(7/12)=8/12}}} [combined like terms]
{{{(y/12)-15/12=0}}} [subtract 8/12 from both sides]
{{{y-15 = 0}}} [multiply both sides by 12]
{{{y=15}}} [add 15 to both sides]
I hope that's one of your choices!