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0.4+3y=3.5
We move all terms to the left:
0.4+3y-(3.5)=0
We add all the numbers together, and all the variables
3y-3.1=0
We move all terms containing y to the left, all other terms to the right
3y=3.1
y=3.1/3
y=1+0.1/3
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