80=x^2+12x-x^2+2x

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Solution for 80=x^2+12x-x^2+2x equation: 



80=x^2+12x-x^2+2x

We move all terms to the left:

80-(x^2+12x-x^2+2x)=0

We get rid of parentheses

-x^2+x^2-12x-2x+80=0

We add all the numbers together, and all the variables

-14x+80=0

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

-14x=-80

x=-80/-14

x=5+5/7

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