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利用者:Beneficii/Duck

Find the Least Common Multiple (LCM), a.k.a. Least Common Denominator (LCD).

Example:

Find the Greatest Common Factor (GCF).

Example:

Find the sum, express it as a mixed number, not an improper fraction, and reduce it.

Find the difference, express it as a mixed number, not an improper fraction, and reduce it.