3x-12=3(x-3)

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



3x-12=3(x-3)

We move all terms to the left:

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



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

3(x-3)

We multiply parentheses

3x-9

Back to the equation:

-(3x-9)



We get rid of parentheses

3x-3x+9-12=0

We add all the numbers together, and all the variables

-3!=0

There is no solution for this equation

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