X^-8x=-21

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Solution for X^-8x=-21 equation: 



X^-8X=-21

We move all terms to the left:

X^-8X-(-21)=0

We add all the numbers together, and all the variables

-7X+21=0

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

-7X=-21

X=-21/-7

X=+3

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