400=x=6,800

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Solution for 400=x=6,800 equation: 



400=x=6.800

We move all terms to the left:

400-(x)=0

We add all the numbers together, and all the variables

-1x+400=0

We move all terms containing x to the left, all other terms to the right

-x=-400

x=-400/-1

x=+400

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