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+4=7-2Y
We move all terms to the left:
+4-(7-2Y)=0
We add all the numbers together, and all the variables
-(-2Y+7)+4=0
We get rid of parentheses
2Y-7+4=0
We add all the numbers together, and all the variables
2Y-3=0
We move all terms containing Y to the left, all other terms to the right
2Y=3
Y=3/2
Y=1+1/2
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