108=-4(7r+8)

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Solution for 108=-4(7r+8) equation: 



108=-4(7r+8)

We move all terms to the left:

108-(-4(7r+8))=0



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

-4(7r+8)

We multiply parentheses

-28r-32

Back to the equation:

-(-28r-32)



We get rid of parentheses

28r+32+108=0

We add all the numbers together, and all the variables

28r+140=0

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

28r=-140

r=-140/28

r=-5

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