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3b+3.49=7.24
We move all terms to the left:
3b+3.49-(7.24)=0
We add all the numbers together, and all the variables
3b-3.75=0
We move all terms containing b to the left, all other terms to the right
3b=3.75
b=3.75/3
b=1+0.75/3
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