LCM of Rational Numbers | Class 8–10 | JEE Foundation Basics

🎯 LCM of Rational Numbers

First, understand the idea → then use a reliable shortcut.
In this lesson we find the LCM of rational numbers (fractions) using prime factorization + a clean shortcut, with word problems you’ll actually see in exams.

📚 WHAT YOU'LL LEARN:

Concept of LCM for fractions (rational numbers)

Shortcut: LCM of fractions = LCM(numerators) ÷ HCF(denominators)

Step-by-step examples & common mistakes

Word problems (time, cycles, gear/rotations)
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