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3b=40.20
We move all terms to the left:
3b-(40.20)=0
We add all the numbers together, and all the variables
3b-(40.2)=0
We add all the numbers together, and all the variables
3b-40.2=0
We move all terms containing b to the left, all other terms to the right
3b=40.2
b=40.2/3
b=13+1/2.5
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