100=-2(1-8r)

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Solution for 100=-2(1-8r) equation: 



100=-2(1-8r)

We move all terms to the left:

100-(-2(1-8r))=0

We add all the numbers together, and all the variables

-(-2(-8r+1))+100=0



We calculate terms in parentheses: -(-2(-8r+1)), so:

-2(-8r+1)

We multiply parentheses

16r-2

Back to the equation:

-(16r-2)



We get rid of parentheses

-16r+2+100=0

We add all the numbers together, and all the variables

-16r+102=0

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

-16r=-102

r=-102/-16

r=6+3/8

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