30=-5(r-5)

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Solution for 30=-5(r-5) equation: 



30=-5(r-5)

We move all terms to the left:

30-(-5(r-5))=0



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

-5(r-5)

We multiply parentheses

-5r+25

Back to the equation:

-(-5r+25)



We get rid of parentheses

5r-25+30=0

We add all the numbers together, and all the variables

5r+5=0

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

5r=-5

r=-5/5

r=-1

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