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1+-2/1+2x=13
We move all terms to the left:
1+-2/1+2x-(13)=0
determiningTheFunctionDomain 2x+1-13+-2/1=0
We add all the numbers together, and all the variables
2x-14=0
We move all terms containing x to the left, all other terms to the right
2x=14
x=14/2
x=7
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