-81=-1-8(x+)

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



-81=-1-8(x+)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



We calculate terms in parentheses: -(-1-8(+x)), so:

-1-8(+x)

determiningTheFunctionDomain
-8(+x)-1

We multiply parentheses

-8x-1

Back to the equation:

-(-8x-1)



We get rid of parentheses

8x+1-81=0

We add all the numbers together, and all the variables

8x-80=0

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

8x=80

x=80/8

x=10

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