9-r=9-4r+3r

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Solution for 9-r=9-4r+3r equation: 



9-r=9-4r+3r

We move all terms to the left:

9-r-(9-4r+3r)=0

We add all the numbers together, and all the variables

-r-(-1r+9)+9=0

We add all the numbers together, and all the variables

-1r-(-1r+9)+9=0

We get rid of parentheses

-1r+1r-9+9=0

We add all the numbers together, and all the variables

=0

r=0/1

r=0

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