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-0.1+0.3y=2
We move all terms to the left:
-0.1+0.3y-(2)=0
We add all the numbers together, and all the variables
0.3y-2.1=0
We move all terms containing y to the left, all other terms to the right
0.3y=2.1
y=2.1/0.3
y=7
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