2y * 1/3-(2y+9)* 1/6=1
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2y*1/3-(2y+9)*1/6=12y*1/3-(2y+9)*1/6=12y*1/3-(2y+9)*1/6=12y*1/3-(2y+9)*1/6=12y/3-y/3-3/2=1;y/3=3/2+1
2y * 1/3-(2y+9)* 1/6=1
2y * 1/3-(2y+9)* 1/6=1
2y * 1/3-(2y+9)* 1/6=1
2y * 1/3-(2y+9)* 1/6=1
2y/3-y/3-3/2=1;
y/3=3/2+1;
y/3=5/2;
y=15/2;
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