84=k+7

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Solution for 84=k+7 equation: 



84=k+7

We move all terms to the left:

84-(k+7)=0

We get rid of parentheses

-k-7+84=0

We add all the numbers together, and all the variables

-1k+77=0

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

-k=-77

k=-77/-1

k=+77

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