39=3(x+6)+4x

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Solution for 39=3(x+6)+4x equation: 



39=3(x+6)+4x

We move all terms to the left:

39-(3(x+6)+4x)=0



We calculate terms in parentheses: -(3(x+6)+4x), so:

3(x+6)+4x

We add all the numbers together, and all the variables

4x+3(x+6)

We multiply parentheses

4x+3x+18

We add all the numbers together, and all the variables

7x+18

Back to the equation:

-(7x+18)



We get rid of parentheses

-7x-18+39=0

We add all the numbers together, and all the variables

-7x+21=0

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

-7x=-21

x=-21/-7

x=+3

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