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y=3y-28
We move all terms to the left:
y-(3y-28)=0
We get rid of parentheses
y-3y+28=0
We add all the numbers together, and all the variables
-2y+28=0
We move all terms containing y to the left, all other terms to the right
-2y=-28
y=-28/-2
y=+14
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