-7=2+k

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Solution for -7=2+k equation: 



-7=2+k

We move all terms to the left:

-7-(2+k)=0

We add all the numbers together, and all the variables

-(k+2)-7=0

We get rid of parentheses

-k-2-7=0

We add all the numbers together, and all the variables

-1k-9=0

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

-k=9

k=9/-1

k=-9

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