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x-(2x-250)=2858
We move all terms to the left:
x-(2x-250)-(2858)=0
We get rid of parentheses
x-2x+250-2858=0
We add all the numbers together, and all the variables
-1x-2608=0
We move all terms containing x to the left, all other terms to the right
-x=2608
x=2608/-1
x=-2608
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