(21x+9)=(27x-9)

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Solution for (21x+9)=(27x-9) equation: 



(21x+9)=(27x-9)

We move all terms to the left:

(21x+9)-((27x-9))=0

We get rid of parentheses

21x-((27x-9))+9=0



We calculate terms in parentheses: -((27x-9)), so:

(27x-9)

We get rid of parentheses

27x-9

Back to the equation:

-(27x-9)



We get rid of parentheses

21x-27x+9+9=0

We add all the numbers together, and all the variables

-6x+18=0

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

-6x=-18

x=-18/-6

x=+3

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