LCM( 35, 77 ) = 385
The formula for finding LCM is
$$ \text{LCM} (a, b) = \frac{ a \cdot b }{ \text{GCD}(a,b)} $$In this example we have: a = 35, b = 77 and GCD(35, 77) = 7.
$$ \text{LCM} (35, 77) = \frac{ 35 \cdot 77 }{ \text{GCD}(35,77)} = \frac{ 2695 }{ 7 } = 385 $$