100=5(k+9)

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Solution for 100=5(k+9) equation: 



100=5(k+9)

We move all terms to the left:

100-(5(k+9))=0



We calculate terms in parentheses: -(5(k+9)), so:

5(k+9)

We multiply parentheses

5k+45

Back to the equation:

-(5k+45)



We get rid of parentheses

-5k-45+100=0

We add all the numbers together, and all the variables

-5k+55=0

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

-5k=-55

k=-55/-5

k=+11

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