42=12+3(x+8)

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Solution for 42=12+3(x+8) equation: 



42=12+3(x+8)

We move all terms to the left:

42-(12+3(x+8))=0



We calculate terms in parentheses: -(12+3(x+8)), so:

12+3(x+8)

determiningTheFunctionDomain
3(x+8)+12

We multiply parentheses

3x+24+12

We add all the numbers together, and all the variables

3x+36

Back to the equation:

-(3x+36)



We get rid of parentheses

-3x-36+42=0

We add all the numbers together, and all the variables

-3x+6=0

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

-3x=-6

x=-6/-3

x=+2

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