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2.7=8.1+y
We move all terms to the left:
2.7-(8.1+y)=0
We add all the numbers together, and all the variables
-(y+8.1)+2.7=0
We get rid of parentheses
-y-8.1+2.7=0
We add all the numbers together, and all the variables
-1y-5.4=0
We move all terms containing y to the left, all other terms to the right
-y=5.4
y=5.4/-1
y=-5+0.4/1
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