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16^2-8y=121.5
We move all terms to the left:
16^2-8y-(121.5)=0
We add all the numbers together, and all the variables
-8y+134.5=0
We move all terms containing y to the left, all other terms to the right
-8y=-134.5
y=-134.5/-8
y=16+2.6/3.2
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