18=-9(x-1)

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Solution for 18=-9(x-1) equation: 



18=-9(x-1)

We move all terms to the left:

18-(-9(x-1))=0



We calculate terms in parentheses: -(-9(x-1)), so:

-9(x-1)

We multiply parentheses

-9x+9

Back to the equation:

-(-9x+9)



We get rid of parentheses

9x-9+18=0

We add all the numbers together, and all the variables

9x+9=0

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

9x=-9

x=-9/9

x=-1

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