81=1-5(-1+5x)

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Solution for 81=1-5(-1+5x) equation: 



81=1-5(-1+5x)

We move all terms to the left:

81-(1-5(-1+5x))=0

We add all the numbers together, and all the variables

-(1-5(5x-1))+81=0



We calculate terms in parentheses: -(1-5(5x-1)), so:

1-5(5x-1)

determiningTheFunctionDomain
-5(5x-1)+1

We multiply parentheses

-25x+5+1

We add all the numbers together, and all the variables

-25x+6

Back to the equation:

-(-25x+6)



We get rid of parentheses

25x-6+81=0

We add all the numbers together, and all the variables

25x+75=0

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

25x=-75

x=-75/25

x=-3

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