16=-8(-1+r)

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Solution for 16=-8(-1+r) equation: 



16=-8(-1+r)

We move all terms to the left:

16-(-8(-1+r))=0

We add all the numbers together, and all the variables

-(-8(r-1))+16=0



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

-8(r-1)

We multiply parentheses

-8r+8

Back to the equation:

-(-8r+8)



We get rid of parentheses

8r-8+16=0

We add all the numbers together, and all the variables

8r+8=0

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

8r=-8

r=-8/8

r=-1

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