104=-8(r-5)

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Solution for 104=-8(r-5) equation: 



104=-8(r-5)

We move all terms to the left:

104-(-8(r-5))=0



We calculate terms in parentheses: -(-8(r-5)), so:

-8(r-5)

We multiply parentheses

-8r+40

Back to the equation:

-(-8r+40)



We get rid of parentheses

8r-40+104=0

We add all the numbers together, and all the variables

8r+64=0

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

8r=-64

r=-64/8

r=-8

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