21-5k=-8(9k-11)

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Solution for 21-5k=-8(9k-11) equation: 



21-5k=-8(9k-11)

We move all terms to the left:

21-5k-(-8(9k-11))=0



We calculate terms in parentheses: -(-8(9k-11)), so:

-8(9k-11)

We multiply parentheses

-72k+88

Back to the equation:

-(-72k+88)



We get rid of parentheses

-5k+72k-88+21=0

We add all the numbers together, and all the variables

67k-67=0

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

67k=67

k=67/67

k=1

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