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2.5b=30.5
We move all terms to the left:
2.5b-(30.5)=0
We add all the numbers together, and all the variables
2.5b-30.5=0
We move all terms containing b to the left, all other terms to the right
2.5b=30.5
b=30.5/2.5
b=12+0.5/2.5
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