-161=-7(4+r)

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Solution for -161=-7(4+r) equation: 



-161=-7(4+r)

We move all terms to the left:

-161-(-7(4+r))=0

We add all the numbers together, and all the variables

-(-7(r+4))-161=0



We calculate terms in parentheses: -(-7(r+4)), so:

-7(r+4)

We multiply parentheses

-7r-28

Back to the equation:

-(-7r-28)



We get rid of parentheses

7r+28-161=0

We add all the numbers together, and all the variables

7r-133=0

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

7r=133

r=133/7

r=19

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