Chapter 3. Variables
When I was in first grade, my teacher gave us this problem:
As a budding mathematician, my job was to figure out what number went in the blank space. When I was in ninth grade, my algebra teacher gave us the following problem:
As a budding mathematician, my job was to figure out what number the X represented.
Now that I am older and wiser, I have moved away from such nonsense. Today, I know that it was wrong to use X because it has no meaning. Today, I know that the problem should have been written something like this:
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