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5a-(-3)=13
We move all terms to the left:
5a-(-3)-(13)=0
determiningTheFunctionDomain 5a-13-(-3)=0
We add all the numbers together, and all the variables
5a-10=0
We move all terms containing a to the left, all other terms to the right
5a=10
a=10/5
a=2
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