Respuesta :

variables are used in algebra and other branches of mathematis.

They are represented by letters. Usually ( but not necesserally)  the letters at the end of the alphabet  like x,y and z.

Answer:

Step-by-step explanation:

In Arithmetic Operations variables are used to represent a yet unknown value that is needed for the final result. Variables are used in countless situations and are represented by letters or symbols. These letters and symbols are usually taken from the English Alphabet or the Greek Alphabet and used as variables. Since they are unknown until they are replaced by a value any symbol can be used.

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