-8(7+r)=-8(-1-r)

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Solution for -8(7+r)=-8(-1-r) equation: 



-8(7+r)=-8(-1-r)

We move all terms to the left:

-8(7+r)-(-8(-1-r))=0

We add all the numbers together, and all the variables

-8(r+7)-(-8(-1r-1))=0

We multiply parentheses

-8r-(-8(-1r-1))-56=0



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

-8(-1r-1)

We multiply parentheses

8r+8

Back to the equation:

-(8r+8)



We get rid of parentheses

-8r-8r-8-56=0

We add all the numbers together, and all the variables

-16r-64=0

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

-16r=64

r=64/-16

r=-4

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