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Module: Variables, Expressions, Fractions and Equations
Unit: Writing Variable Expressions

Writing Variable Expressions

In algebra, variables are letters (symbols) that are used to represent unspecified numbers. Any letters or symbols may be used as a variable.
For instance, A = L W is an algebraic expression, where A = area of a rectangle, L = length and W = width. We selected A because it is the first letter of “Area”, L because it is the first letter of “Length” and W because it is the first letter of “Width”. Learning to write correct variable expressions is a very important step in mastering algebra.

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