(3x+12)=(7x-9)

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Solution for (3x+12)=(7x-9) equation: 



(3x+12)=(7x-9)

We move all terms to the left:

(3x+12)-((7x-9))=0

We get rid of parentheses

3x-((7x-9))+12=0



We calculate terms in parentheses: -((7x-9)), so:

(7x-9)

We get rid of parentheses

7x-9

Back to the equation:

-(7x-9)



We get rid of parentheses

3x-7x+9+12=0

We add all the numbers together, and all the variables

-4x+21=0

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

-4x=-21

x=-21/-4

x=5+1/4

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