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80.8992+8y=121.5
We move all terms to the left:
80.8992+8y-(121.5)=0
We add all the numbers together, and all the variables
8y-40.6008=0
We move all terms containing y to the left, all other terms to the right
8y=40.6008
y=40.6008/8
y=5+0.6008/8
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