20x-9=20x-9

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Solution for 20x-9=20x-9 equation: 



20x-9=20x-9

We move all terms to the left:

20x-9-(20x-9)=0

We get rid of parentheses

20x-20x+9-9=0

We add all the numbers together, and all the variables

=0

x=0/1

x=0

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