4r=-4(-8r-7)

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Solution for 4r=-4(-8r-7) equation: 



4r=-4(-8r-7)

We move all terms to the left:

4r-(-4(-8r-7))=0



We calculate terms in parentheses: -(-4(-8r-7)), so:

-4(-8r-7)

We multiply parentheses

32r+28

Back to the equation:

-(32r+28)



We get rid of parentheses

4r-32r-28=0

We add all the numbers together, and all the variables

-28r-28=0

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

-28r=28

r=28/-28

r=-1

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