X=3(4+x)

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Solution for X=3(4+x) equation: 



X=3(4+X)

We move all terms to the left:

X-(3(4+X))=0

We add all the numbers together, and all the variables

X-(3(X+4))=0



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

3(X+4)

We multiply parentheses

3X+12

Back to the equation:

-(3X+12)



We get rid of parentheses

X-3X-12=0

We add all the numbers together, and all the variables

-2X-12=0

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

-2X=12

X=12/-2

X=-6

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