21x-6=21x-6

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



21x-6=21x-6

We move all terms to the left:

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

We get rid of parentheses

21x-21x+6-6=0

We add all the numbers together, and all the variables

=0

x=0/1

x=0

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