-819=971-r

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Solution for -819=971-r equation: 



-819=971-r

We move all terms to the left:

-819-(971-r)=0

We add all the numbers together, and all the variables

-(-1r+971)-819=0

We get rid of parentheses

1r-971-819=0

We add all the numbers together, and all the variables

r-1790=0

We move all terms containing r to the left, all other terms to the right

r=1790

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