-x-21-2x=39

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Solution for -x-21-2x=39 equation: 



-x-21-2x=39

We move all terms to the left:

-x-21-2x-(39)=0

We add all the numbers together, and all the variables

-3x-60=0

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

-3x=60

x=60/-3

x=-20

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