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b=70(1+.10)^3
We move all terms to the left:
b-(70(1+.10)^3)=0
We add all the numbers together, and all the variables
b-(70(1.1)^3)=0
We add all the numbers together, and all the variables
b-93.17=0
We move all terms containing b to the left, all other terms to the right
b=93.17
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