91=-7(4+k)

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Solution for 91=-7(4+k) equation: 



91=-7(4+k)

We move all terms to the left:

91-(-7(4+k))=0

We add all the numbers together, and all the variables

-(-7(k+4))+91=0



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

-7(k+4)

We multiply parentheses

-7k-28

Back to the equation:

-(-7k-28)



We get rid of parentheses

7k+28+91=0

We add all the numbers together, and all the variables

7k+119=0

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

7k=-119

k=-119/7

k=-17

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