3-9r=3-7r

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Solution for 3-9r=3-7r equation: 



3-9r=3-7r

We move all terms to the left:

3-9r-(3-7r)=0

We add all the numbers together, and all the variables

-9r-(-7r+3)+3=0

We get rid of parentheses

-9r+7r-3+3=0

We add all the numbers together, and all the variables

-2r=0

r=0/-2

r=0

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