-10k=-420

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Solution for -10k=-420 equation: 



-10k=-420

We move all terms to the left:

-10k-(-420)=0

We add all the numbers together, and all the variables

-10k+420=0

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

-10k=-420

k=-420/-10

k=+42

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