287=-7(8+7k)

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Solution for 287=-7(8+7k) equation: 



287=-7(8+7k)

We move all terms to the left:

287-(-7(8+7k))=0

We add all the numbers together, and all the variables

-(-7(7k+8))+287=0



We calculate terms in parentheses: -(-7(7k+8)), so:

-7(7k+8)

We multiply parentheses

-49k-56

Back to the equation:

-(-49k-56)



We get rid of parentheses

49k+56+287=0

We add all the numbers together, and all the variables

49k+343=0

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

49k=-343

k=-343/49

k=-7

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