-243=-9(10+x+1)

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Solution for -243=-9(10+x+1) equation: 



-243=-9(10+x+1)

We move all terms to the left:

-243-(-9(10+x+1))=0

We add all the numbers together, and all the variables

-(-9(x+11))-243=0



We calculate terms in parentheses: -(-9(x+11)), so:

-9(x+11)

We multiply parentheses

-9x-99

Back to the equation:

-(-9x-99)



We get rid of parentheses

9x+99-243=0

We add all the numbers together, and all the variables

9x-144=0

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

9x=144

x=144/9

x=16

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