For this case we must find the solution of the following expression:
[tex]\frac {5} {4} + \frac {7} {9}[/tex]
So, we have:
[tex]\frac {5 * 9 + 4 * 7} {4 * 9} = \frac {45 + 28} {36} = \frac {73} {36}[/tex]
The expression cannot be simplified. Thus, the result is:
[tex]\frac {73} {36}[/tex]
Answer:
[tex]\frac {73} {36}[/tex]