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Mathematics (Technical)
Basic Algebra
Why all the letters in algebra? | Introduction to algebra | Algebra I | Khan Academy
RooksAndBooks
Sep 9, 2016
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algebra i
khan academy
sal khan
variables
Gold Member
Jesse Roe and Sal Khan talk about why we use letters in algebra Watch the next lesson:
https://www.khanacademy.org/math/algebra/introduction-to-algebra/varia
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