81=-x-6(1-5x)

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Solution for 81=-x-6(1-5x) equation: 



81=-x-6(1-5x)

We move all terms to the left:

81-(-x-6(1-5x))=0

We add all the numbers together, and all the variables

-(-x-6(-5x+1))+81=0



We calculate terms in parentheses: -(-x-6(-5x+1)), so:

-x-6(-5x+1)

We add all the numbers together, and all the variables

-1x-6(-5x+1)

We multiply parentheses

-1x+30x-6

We add all the numbers together, and all the variables

29x-6

Back to the equation:

-(29x-6)



We get rid of parentheses

-29x+6+81=0

We add all the numbers together, and all the variables

-29x+87=0

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

-29x=-87

x=-87/-29

x=+3

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