-21+4x=6x-21-(8x+12)

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Solution for -21+4x=6x-21-(8x+12) equation: 



-21+4x=6x-21-(8x+12)

We move all terms to the left:

-21+4x-(6x-21-(8x+12))=0



We calculate terms in parentheses: -(6x-21-(8x+12)), so:

6x-21-(8x+12)

determiningTheFunctionDomain
6x-(8x+12)-21

We get rid of parentheses

6x-8x-12-21

We add all the numbers together, and all the variables

-2x-33

Back to the equation:

-(-2x-33)



We get rid of parentheses

4x+2x+33-21=0

We add all the numbers together, and all the variables

6x+12=0

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

6x=-12

x=-12/6

x=-2

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