-57=7x-10(9+x)

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Solution for -57=7x-10(9+x) equation: 



-57=7x-10(9+x)

We move all terms to the left:

-57-(7x-10(9+x))=0

We add all the numbers together, and all the variables

-(7x-10(x+9))-57=0



We calculate terms in parentheses: -(7x-10(x+9)), so:

7x-10(x+9)

We multiply parentheses

7x-10x-90

We add all the numbers together, and all the variables

-3x-90

Back to the equation:

-(-3x-90)



We get rid of parentheses

3x+90-57=0

We add all the numbers together, and all the variables

3x+33=0

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

3x=-33

x=-33/3

x=-11

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