3x=4(x+3)

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



3x=4(x+3)

We move all terms to the left:

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



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

4(x+3)

We multiply parentheses

4x+12

Back to the equation:

-(4x+12)



We get rid of parentheses

3x-4x-12=0

We add all the numbers together, and all the variables

-1x-12=0

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

-x=12

x=12/-1

x=-12

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