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2b-(-5)=15
We move all terms to the left:
2b-(-5)-(15)=0
determiningTheFunctionDomain 2b-15-(-5)=0
We add all the numbers together, and all the variables
2b-10=0
We move all terms containing b to the left, all other terms to the right
2b=10
b=10/2
b=5
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