7=k+13

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Solution for 7=k+13 equation: 



7=k+13

We move all terms to the left:

7-(k+13)=0

We get rid of parentheses

-k-13+7=0

We add all the numbers together, and all the variables

-1k-6=0

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

-k=6

k=6/-1

k=-6

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