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.2+3.2y=12.8
We move all terms to the left:
.2+3.2y-(12.8)=0
We add all the numbers together, and all the variables
3.2y-12.6=0
We move all terms containing y to the left, all other terms to the right
3.2y=12.6
y=12.6/3.2
y=3+3/3.2
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