Respuesta :
Recall that:
[tex]\frac{a}{b}\times\frac{c}{d}=\frac{ac}{bd}\text{.}[/tex]Therefore:
[tex]\frac{5}{12}\times\frac{7}{8}=\frac{5\cdot7}{12\cdot8}\text{.}[/tex]Now, we know that:
[tex]\begin{gathered} 5\cdot7=35, \\ 12\cdot8=96. \end{gathered}[/tex]Therefore:
[tex]\frac{5}{12}\times\frac{7}{8}=\frac{35}{96}\text{.}[/tex]Now, notice that we cannot reduce the last fraction because:
[tex]\begin{gathered} 35=7\cdot5, \\ 96=3\cdot2^5\text{.} \end{gathered}[/tex]35 and 96 do not have common prime factors.
Answer:
[tex]\frac{35}{96}\text{.}[/tex]