X^-2x=21

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Solution for X^-2x=21 equation: 



X^-2X=21

We move all terms to the left:

X^-2X-(21)=0

We add all the numbers together, and all the variables

-1X-21=0

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

-X=21

X=21/-1

X=-21

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