Respuesta :

[tex]\begin{gathered} \frac{7}{4}+\frac{5}{6}=\frac{(7)\cdot(6)+(4)\cdot(5)}{(4)\cdot(6)}=\frac{42+20}{24}=\frac{62}{24}=\frac{(2)\cdot(31)}{(2)\cdot(12)}=\frac{31}{12} \\ \\ \frac{7}{4}+\frac{5}{6}=\frac{31}{12} \end{gathered}[/tex]