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0.55+0.3y=0.9
We move all terms to the left:
0.55+0.3y-(0.9)=0
We add all the numbers together, and all the variables
0.3y-0.35=0
We move all terms containing y to the left, all other terms to the right
0.3y=0.35
y=0.35/0.3
y=1+0.05/0.3
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