6x-21=21x+63

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Solution for 6x-21=21x+63 equation: 



6x-21=21x+63

We move all terms to the left:

6x-21-(21x+63)=0

We get rid of parentheses

6x-21x-63-21=0

We add all the numbers together, and all the variables

-15x-84=0

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

-15x=84

x=84/-15

x=-5+3/5

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