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## Homework Statement

http://www.math.harvard.edu/archive/21b_spring_09/faq.html

I'm having trouble understanding this explanation, particularly this part. "The Kyle numbers are 1, 2 because adding the first to 2 times the second column gives zero. "

Sorry for this basic question but I was wondering if someone can explain this particular part.

## Homework Equations

NA

## The Attempt at a Solution

NA