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-9.1+2y=3.7
We move all terms to the left:
-9.1+2y-(3.7)=0
We add all the numbers together, and all the variables
2y-12.8=0
We move all terms containing y to the left, all other terms to the right
2y=12.8
y=12.8/2
y=6+0.8/2
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