Hey there!
[tex] \frac{1}{6} And \frac{7}{8} \\ \\ LCD: 24 \\ \\ \\ \\ \frac{3}{4} And \frac{7}{10} \\ \\ LCD: 20 \\ \\ \\ \\ \frac{7}{12} , \frac{3}{8} And \frac{11}{36} \\ \\ LCD: 72 \\ \\ \\ \\ \frac{8}{15} , \frac{11}{30} , And \frac{3}{5} \\ \\ LCD: 30 [/tex]
Basically "least common denominator" is the number that is the smallest that can be a common denominator to set off the other fractions
Good luck on your assignment and enjoy your day!
~[tex] LoveYourselfFirst:) [/tex]