-7=-1-k

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Solution for -7=-1-k equation: 



-7=-1-k

We move all terms to the left:

-7-(-1-k)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

1k+1-7=0

We add all the numbers together, and all the variables

k-6=0

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

k=6

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