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=-7-2Y+11
We move all terms to the left:
-(-7-2Y+11)=0
We add all the numbers together, and all the variables
-(-2Y+4)=0
We get rid of parentheses
2Y-4=0
We move all terms containing Y to the left, all other terms to the right
2Y=4
Y=4/2
Y=2
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