3x=12(x-3)

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



3x=12(x-3)

We move all terms to the left:

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



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

12(x-3)

We multiply parentheses

12x-36

Back to the equation:

-(12x-36)



We get rid of parentheses

3x-12x+36=0

We add all the numbers together, and all the variables

-9x+36=0

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

-9x=-36

x=-36/-9

x=+4

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