Comment: Your Example is Very Basic Math

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In reply to comment: Algebra is such a waste. (see in situ)

Your Example is Very Basic Math

Sorry. Not algebra at all. Learning to measure the area of a carpet is something anyone can learn all by themselves very easily. All practical real world uses are easy to learn without school. All the countless hours of drilling with every possible number game invented is such an enormous waste of valuable learning time. And an insult to human intelligence.