x+x+81=x-144

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Solution for x+x+81=x-144 equation: 



x+x+81=x-144

We move all terms to the left:

x+x+81-(x-144)=0

We add all the numbers together, and all the variables

2x-(x-144)+81=0

We get rid of parentheses

2x-x+144+81=0

We add all the numbers together, and all the variables

x+225=0

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

x=-225

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