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34.5+1.50b=300
We move all terms to the left:
34.5+1.50b-(300)=0
We add all the numbers together, and all the variables
1.50b-265.5=0
We move all terms containing b to the left, all other terms to the right
1.50b=265.5
b=265.5/1.50
b=177
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