9r+4=9r+4

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Solution for 9r+4=9r+4 equation: 



9r+4=9r+4

We move all terms to the left:

9r+4-(9r+4)=0

We get rid of parentheses

9r-9r-4+4=0

We add all the numbers together, and all the variables

=0

r=0/1

r=0

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