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0.8y+0.9=3.3
We move all terms to the left:
0.8y+0.9-(3.3)=0
We add all the numbers together, and all the variables
0.8y-2.4=0
We move all terms containing y to the left, all other terms to the right
0.8y=2.4
y=2.4/0.8
y=2+0.8/0.8
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