Variables And Expressions

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The document discusses variables, expressions, and evaluating expressions. It provides examples of algebraic expressions like p*7 and r+6. It explains that to evaluate an expression, you plug in the given value for the variable. For example, if W=55, then 55/11=5. The document also discusses finding the expression based on a series of related numbers, noting you look for the operation that fits each row, like dividing 60 by 3 to get 20.

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