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8b+4b=16+32
We move all terms to the left:
8b+4b-(16+32)=0
We add all the numbers together, and all the variables
8b+4b-48=0
We add all the numbers together, and all the variables
12b-48=0
We move all terms containing b to the left, all other terms to the right
12b=48
b=48/12
b=4
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