I think its 180/24 here is my work
[tex]\frac{3}{8}\\=\\ \\\frac{9}{24} \\\\\frac{5}{6}\\=\\ \\\frac{20}{24} \\[/tex] so you find the lcm of [tex]\frac{20}{24} and \frac{9}{24} = 180/24[/tex]