3x+9+2x=3(4x-4)

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Solution for 3x+9+2x=3(4x-4) equation: 



3x+9+2x=3(4x-4)

We move all terms to the left:

3x+9+2x-(3(4x-4))=0

We add all the numbers together, and all the variables

5x-(3(4x-4))+9=0



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

3(4x-4)

We multiply parentheses

12x-12

Back to the equation:

-(12x-12)



We get rid of parentheses

5x-12x+12+9=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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