280=200-x

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Solution for 280=200-x equation:



280=200-x
We move all terms to the left:
280-(200-x)=0
We add all the numbers together, and all the variables
-(-1x+200)+280=0
We get rid of parentheses
1x-200+280=0
We add all the numbers together, and all the variables
x+80=0
We move all terms containing x to the left, all other terms to the right
x=-80

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