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0.5y+4.5=y
We move all terms to the left:
0.5y+4.5-(y)=0
We add all the numbers together, and all the variables
-0.5y+4.5=0
We move all terms containing y to the left, all other terms to the right
-0.5y=-4.5
y=-4.5/-0.5
y=+9
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