400-20x+20x-x2=46-x2+92-2x

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Solution for 400-20x+20x-x2=46-x2+92-2x equation: 



400-20x+20x-x2=46-x2+92-2x

We move all terms to the left:

400-20x+20x-x2-(46-x2+92-2x)=0

We add all the numbers together, and all the variables

-(-1x^2-2x+46+92)-20x+20x-x2+400=0

We add all the numbers together, and all the variables

-1x^2-(-1x^2-2x+46+92)+400=0

We get rid of parentheses

-1x^2+1x^2+2x-46-92+400=0

We add all the numbers together, and all the variables

2x+262=0

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

2x=-262

x=-262/2

x=-131

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