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(y-1)/2·6-1·6=3(y-2)·6+(5+y)/3·6
3(y-1)-6=18(y-2)+2(5+y)
3y-3-6=18y-36+10+2y
3y-9=20y-26
-9+26=20y-3y
17=17y
y=17/17
y=1
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