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19=-y+223
We move all terms to the left:
19-(-y+223)=0
We add all the numbers together, and all the variables
-(-1y+223)+19=0
We get rid of parentheses
1y-223+19=0
We add all the numbers together, and all the variables
y-204=0
We move all terms containing y to the left, all other terms to the right
y=204
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