672
1) Let's find the Least Common Divisor of
[tex]\begin{gathered} \frac{7}{56},\text{ }\frac{2}{96} \\ \end{gathered}[/tex]
2) Let's factor 56, 96
3)So the LCD, also called LCM of those denominators (56 and 96) is 672, and with this LCD we can add or subtract those fractions.
