-7=r-7-r

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



-7=r-7-r

We move all terms to the left:

-7-(r-7-r)=0

We add all the numbers together, and all the variables

-7-(-7)=0

We add all the numbers together, and all the variables

=0

r=0/1

r=0

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