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1.7=2y+8.1
We move all terms to the left:
1.7-(2y+8.1)=0
We get rid of parentheses
-2y-8.1+1.7=0
We add all the numbers together, and all the variables
-2y-6.4=0
We move all terms containing y to the left, all other terms to the right
-2y=6.4
y=6.4/-2
y=-3+0.4/2
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