We have the following fraction:
[tex]\frac{110}{390}[/tex]we can rewrite this fraction as
[tex]\frac{110}{390}=\frac{11\times10}{39\times10}[/tex]so we can cancel out the 10 and get
[tex]\frac{110}{390}=\frac{11}{39}[/tex]we can not reduce it more because the number 11 is a prime number. Then, the answer is
[tex]\frac{11}{39}[/tex]