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X+(5+2)+(2+X)=45
We move all terms to the left:
X+(5+2)+(2+X)-(45)=0
determiningTheFunctionDomain X+(2+X)-45+(5+2)=0
We add all the numbers together, and all the variables
X+(X+2)-45+7=0
We add all the numbers together, and all the variables
X+(X+2)-38=0
We get rid of parentheses
X+X+2-38=0
We add all the numbers together, and all the variables
2X-36=0
We move all terms containing X to the left, all other terms to the right
2X=36
X=36/2
X=18
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