a-6=8-9(9+a)

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Solution for a-6=8-9(9+a) equation: 



a-6=8-9(9+a)

We move all terms to the left:

a-6-(8-9(9+a))=0

We add all the numbers together, and all the variables

a-(8-9(a+9))-6=0



We calculate terms in parentheses: -(8-9(a+9)), so:

8-9(a+9)

determiningTheFunctionDomain
-9(a+9)+8

We multiply parentheses

-9a-81+8

We add all the numbers together, and all the variables

-9a-73

Back to the equation:

-(-9a-73)



We get rid of parentheses

a+9a+73-6=0

We add all the numbers together, and all the variables

10a+67=0

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

10a=-67

a=-67/10

a=-6+7/10

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