-108=-4(1+8r)-8

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Solution for -108=-4(1+8r)-8 equation: 



-108=-4(1+8r)-8

We move all terms to the left:

-108-(-4(1+8r)-8)=0

We add all the numbers together, and all the variables

-(-4(8r+1)-8)-108=0



We calculate terms in parentheses: -(-4(8r+1)-8), so:

-4(8r+1)-8

We multiply parentheses

-32r-4-8

We add all the numbers together, and all the variables

-32r-12

Back to the equation:

-(-32r-12)



We get rid of parentheses

32r+12-108=0

We add all the numbers together, and all the variables

32r-96=0

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

32r=96

r=96/32

r=3

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