x^-2+7x^-1=-12

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Solution for x^-2+7x^-1=-12 equation: 



x^-2+7x^-1=-12

We move all terms to the left:

x^-2+7x^-1-(-12)=0

We add all the numbers together, and all the variables

8x+9=0

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

8x=-9

x=-9/8

x=-1+1/8

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