LCM( 24, 34 ) = 408
The formula for finding LCM is
$$ \text{LCM} (a, b) = \frac{ a \cdot b }{ \text{GCD}(a,b)} $$In this example we have: a = 24, b = 34 and GCD(24, 34) = 2.
$$ \text{LCM} (24, 34) = \frac{ 24 \cdot 34 }{ \text{GCD}(24,34)} = \frac{ 816 }{ 2 } = 408 $$