[tex]\begin{gathered} \text{Least common denominator of }\frac{1}{8}\text{ and }\frac{2}{7} \\ L.C.M\text{ of 8 and 7.} \\ 8=2\times2\times2 \\ 7=7 \\ L\mathrm{}C\mathrm{}M\text{ is}\Rightarrow2\times2\times2\times7=56 \\ So, \\ \text{the least common denominator}\Rightarrow56 \end{gathered}[/tex]
