Okay, here we have this:
Considering the provided sum, we are going to perform it, so we obtain the following:
[tex]\begin{gathered} 1\frac{1}{4}+\frac{5}{6} \\ \\ =\frac{5}{4}+\frac{5}{6} \\ \\ =\frac{30+20}{24} \\ \\ =\frac{50}{24} \\ \\ =\frac{25}{12} \end{gathered}[/tex]Finally we obtain that the result of the sum is 25/12.