-8r-40=8(1-2r)

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Solution for -8r-40=8(1-2r) equation: 



-8r-40=8(1-2r)

We move all terms to the left:

-8r-40-(8(1-2r))=0

We add all the numbers together, and all the variables

-8r-(8(-2r+1))-40=0



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

8(-2r+1)

We multiply parentheses

-16r+8

Back to the equation:

-(-16r+8)



We get rid of parentheses

-8r+16r-8-40=0

We add all the numbers together, and all the variables

8r-48=0

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

8r=48

r=48/8

r=6

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