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78/3*10-x=249
We move all terms to the left:
78/3*10-x-(249)=0
determiningTheFunctionDomain -x-249+78/3*10=0
We add all the numbers together, and all the variables
-1x-223=0
We move all terms containing x to the left, all other terms to the right
-x=223
x=223/-1
x=-223
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