X+9=(-21)+6x

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Solution for X+9=(-21)+6x equation: 



X+9=(-21)+6X

We move all terms to the left:

X+9-((-21)+6X)=0



We calculate terms in parentheses: -((-21)+6X), so:

(-21)+6X

determiningTheFunctionDomain
6X+(-21)

We add all the numbers together, and all the variables

6X-21

Back to the equation:

-(6X-21)



We get rid of parentheses

X-6X+21+9=0

We add all the numbers together, and all the variables

-5X+30=0

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

-5X=-30

X=-30/-5

X=+6

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