x=12-(15+3x)

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Solution for x=12-(15+3x) equation: 



x=12-(15+3x)

We move all terms to the left:

x-(12-(15+3x))=0

We add all the numbers together, and all the variables

x-(12-(3x+15))=0



We calculate terms in parentheses: -(12-(3x+15)), so:

12-(3x+15)

determiningTheFunctionDomain
-(3x+15)+12

We get rid of parentheses

-3x-15+12

We add all the numbers together, and all the variables

-3x-3

Back to the equation:

-(-3x-3)



We get rid of parentheses

x+3x+3=0

We add all the numbers together, and all the variables

4x+3=0

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

4x=-3

x=-3/4

x=-3/4

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