85=-5(r-99)

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Solution for 85=-5(r-99) equation: 



85=-5(r-99)

We move all terms to the left:

85-(-5(r-99))=0



We calculate terms in parentheses: -(-5(r-99)), so:

-5(r-99)

We multiply parentheses

-5r+495

Back to the equation:

-(-5r+495)



We get rid of parentheses

5r-495+85=0

We add all the numbers together, and all the variables

5r-410=0

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

5r=410

r=410/5

r=82

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