-21x-28=-21x-28

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Solution for -21x-28=-21x-28 equation: 



-21x-28=-21x-28

We move all terms to the left:

-21x-28-(-21x-28)=0

We get rid of parentheses

-21x+21x+28-28=0

We add all the numbers together, and all the variables

=0

x=0/1

x=0

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