x-31=9(x+9)

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Solution for x-31=9(x+9) equation: 



x-31=9(x+9)

We move all terms to the left:

x-31-(9(x+9))=0



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

9(x+9)

We multiply parentheses

9x+81

Back to the equation:

-(9x+81)



We get rid of parentheses

x-9x-81-31=0

We add all the numbers together, and all the variables

-8x-112=0

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

-8x=112

x=112/-8

x=-14

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