(q(-9))=-9

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Solution for (q(-9))=-9 equation: 



(q(-9))=-9

We move all terms to the left:

(q(-9))-(-9)=0

We add all the numbers together, and all the variables

(q(-9))+9=0



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

q(-9)

We multiply parentheses

-9q

Back to the equation:

+(-9q)



We get rid of parentheses

-9q+9=0

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

-9q=-9

q=-9/-9

q=1

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