-2x-40=81-x

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Solution for -2x-40=81-x equation: 



-2x-40=81-x

We move all terms to the left:

-2x-40-(81-x)=0

We add all the numbers together, and all the variables

-2x-(-1x+81)-40=0

We get rid of parentheses

-2x+1x-81-40=0

We add all the numbers together, and all the variables

-1x-121=0

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

-x=121

x=121/-1

x=-121

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