x=81+-2x

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Solution for x=81+-2x equation: 



x=81+-2x

We move all terms to the left:

x-(81+-2x)=0

We add all the numbers together, and all the variables

x-(-2x)=0

We get rid of parentheses

x+2x=0

We add all the numbers together, and all the variables

3x=0

x=0/3

x=0

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