89=-2(1+7k)+k

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Solution for 89=-2(1+7k)+k equation: 



89=-2(1+7k)+k

We move all terms to the left:

89-(-2(1+7k)+k)=0

We add all the numbers together, and all the variables

-(-2(7k+1)+k)+89=0



We calculate terms in parentheses: -(-2(7k+1)+k), so:

-2(7k+1)+k

We add all the numbers together, and all the variables

k-2(7k+1)

We multiply parentheses

k-14k-2

We add all the numbers together, and all the variables

-13k-2

Back to the equation:

-(-13k-2)



We get rid of parentheses

13k+2+89=0

We add all the numbers together, and all the variables

13k+91=0

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

13k=-91

k=-91/13

k=-7

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