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-y=2y+219
We move all terms to the left:
-y-(2y+219)=0
We add all the numbers together, and all the variables
-1y-(2y+219)=0
We get rid of parentheses
-1y-2y-219=0
We add all the numbers together, and all the variables
-3y-219=0
We move all terms containing y to the left, all other terms to the right
-3y=219
y=219/-3
y=-73
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