-30-2k=-7k

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Solution for -30-2k=-7k equation: 



-30-2k=-7k

We move all terms to the left:

-30-2k-(-7k)=0

We get rid of parentheses

-2k+7k-30=0

We add all the numbers together, and all the variables

5k-30=0

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

5k=30

k=30/5

k=6

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