81=-9(2+x)

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Solution for 81=-9(2+x) equation: 



81=-9(2+x)

We move all terms to the left:

81-(-9(2+x))=0

We add all the numbers together, and all the variables

-(-9(x+2))+81=0



We calculate terms in parentheses: -(-9(x+2)), so:

-9(x+2)

We multiply parentheses

-9x-18

Back to the equation:

-(-9x-18)



We get rid of parentheses

9x+18+81=0

We add all the numbers together, and all the variables

9x+99=0

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

9x=-99

x=-99/9

x=-11

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