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x+91=2(7x)
We move all terms to the left:
x+91-(2(7x))=0
determiningTheFunctionDomain x-27x+91=0
We add all the numbers together, and all the variables
-26x+91=0
We move all terms containing x to the left, all other terms to the right
-26x=-91
x=-91/-26
x=3+1/2
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