SOLUTION: The branch of mathematics that uses letters, called variables, in place of numerals.

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Question 476105: The branch of mathematics that uses letters, called variables, in place of numerals.
Found 2 solutions by MathLover1, richard1234:
Answer by MathLover1(20855) About Me  (Show Source):
Answer by richard1234(7193) About Me  (Show Source):
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You first learn this in an elementary algebra course, but using variables instead of numbers is used in all fields of mathematics.