259=7k+8(7k-7)

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Solution for 259=7k+8(7k-7) equation: 



259=7k+8(7k-7)

We move all terms to the left:

259-(7k+8(7k-7))=0



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

7k+8(7k-7)

We multiply parentheses

7k+56k-56

We add all the numbers together, and all the variables

63k-56

Back to the equation:

-(63k-56)



We get rid of parentheses

-63k+56+259=0

We add all the numbers together, and all the variables

-63k+315=0

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

-63k=-315

k=-315/-63

k=+5

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