-2k=7-k

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Solution for -2k=7-k equation: 



-2k=7-k

We move all terms to the left:

-2k-(7-k)=0

We add all the numbers together, and all the variables

-2k-(-1k+7)=0

We get rid of parentheses

-2k+1k-7=0

We add all the numbers together, and all the variables

-1k-7=0

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

-k=7

k=7/-1

k=-7

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