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b/0.13=2.1
We move all terms to the left:
b/0.13-(2.1)=0
We add all the numbers together, and all the variables
b/0.13-2.1=0
We multiply all the terms by the denominator
b-(2.1)*0.13=0
We add all the numbers together, and all the variables
b-0.273=0
We move all terms containing b to the left, all other terms to the right
b=0.273
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