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200+6x=600-6x
We move all terms to the left:
200+6x-(600-6x)=0
We add all the numbers together, and all the variables
6x-(-6x+600)+200=0
We get rid of parentheses
6x+6x-600+200=0
We add all the numbers together, and all the variables
12x-400=0
We move all terms containing x to the left, all other terms to the right
12x=400
x=400/12
x=33+1/3
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