(4x+12)=(3x-21)

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Solution for (4x+12)=(3x-21) equation: 



(4x+12)=(3x-21)

We move all terms to the left:

(4x+12)-((3x-21))=0

We get rid of parentheses

4x-((3x-21))+12=0



We calculate terms in parentheses: -((3x-21)), so:

(3x-21)

We get rid of parentheses

3x-21

Back to the equation:

-(3x-21)



We get rid of parentheses

4x-3x+21+12=0

We add all the numbers together, and all the variables

x+33=0

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

x=-33

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