55=5(k-81)

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Solution for 55=5(k-81) equation: 



55=5(k-81)

We move all terms to the left:

55-(5(k-81))=0



We calculate terms in parentheses: -(5(k-81)), so:

5(k-81)

We multiply parentheses

5k-405

Back to the equation:

-(5k-405)



We get rid of parentheses

-5k+405+55=0

We add all the numbers together, and all the variables

-5k+460=0

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

-5k=-460

k=-460/-5

k=+92

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