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Variables

★☆☆☆☆Elementary

📖Definition

A symbol representing an unknown or changeable value.

x, y, z, a, b, c, ...

Commonly used variable symbols

예제 1★☆☆☆☆

Find x if x + 5 = 12.

예제 2★☆☆☆☆

You have x apples. After buying 3 more, you have 10. What is x?

Storing values in variables

Representing quantities in formulas

#algebra#variable#fundamental#elementary