13+k=3k+7

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Solution for 13+k=3k+7 equation: 



13+k=3k+7

We move all terms to the left:

13+k-(3k+7)=0

We get rid of parentheses

k-3k-7+13=0

We add all the numbers together, and all the variables

-2k+6=0

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

-2k=-6

k=-6/-2

k=+3

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