57=15-(12-6x)

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Solution for 57=15-(12-6x) equation: 



57=15-(12-6x)

We move all terms to the left:

57-(15-(12-6x))=0

We add all the numbers together, and all the variables

-(15-(-6x+12))+57=0



We calculate terms in parentheses: -(15-(-6x+12)), so:

15-(-6x+12)

determiningTheFunctionDomain
-(-6x+12)+15

We get rid of parentheses

6x-12+15

We add all the numbers together, and all the variables

6x+3

Back to the equation:

-(6x+3)



We get rid of parentheses

-6x-3+57=0

We add all the numbers together, and all the variables

-6x+54=0

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

-6x=-54

x=-54/-6

x=+9

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