(6x-21)=(6x-21)

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Solution for (6x-21)=(6x-21) equation: 



(6x-21)=(6x-21)

We move all terms to the left:

(6x-21)-((6x-21))=0

We get rid of parentheses

6x-((6x-21))-21=0



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

(6x-21)

We get rid of parentheses

6x-21

Back to the equation:

-(6x-21)



We get rid of parentheses

6x-6x+21-21=0

We add all the numbers together, and all the variables

=0

x=0/1

x=0

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