(2+x)8-1=-81

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Solution for (2+x)8-1=-81 equation: 



(2+x)8-1=-81

We move all terms to the left:

(2+x)8-1-(-81)=0

We add all the numbers together, and all the variables

(x+2)8-1-(-81)=0

We add all the numbers together, and all the variables

(x+2)8+80=0

We multiply parentheses

8x+16+80=0

We add all the numbers together, and all the variables

8x+96=0

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

8x=-96

x=-96/8

x=-12

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