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2(x/2)+x=510
We move all terms to the left:
2(x/2)+x-(510)=0
We add all the numbers together, and all the variables
2(+x/2)+x-510=0
We add all the numbers together, and all the variables
x+2(+x/2)-510=0
We multiply parentheses
x+2x-510=0
We add all the numbers together, and all the variables
3x-510=0
We move all terms containing x to the left, all other terms to the right
3x=510
x=510/3
x=170
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