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4.50+6b=22.50
We move all terms to the left:
4.50+6b-(22.50)=0
We add all the numbers together, and all the variables
6b+4.50-(22.5)=0
We add all the numbers together, and all the variables
6b-18=0
We move all terms containing b to the left, all other terms to the right
6b=18
b=18/6
b=3
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