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2x+(130-20)=500
We move all terms to the left:
2x+(130-20)-(500)=0
determiningTheFunctionDomain 2x-500+(130-20)=0
We add all the numbers together, and all the variables
2x-500+110=0
We add all the numbers together, and all the variables
2x-390=0
We move all terms containing x to the left, all other terms to the right
2x=390
x=390/2
x=195
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