The total of students in the class is 35, 13 of them are men then
35 - 13 = 22, 22 of the students are not men.
To write it in fraction you have to divide the number of students that are not men by the total of students in the class.
[tex]\frac{22}{35}[/tex]And you have the fraction of students that are not male.
You can express the fraction as a decimal number
[tex]\frac{22}{35}=\text{ 0.628}[/tex]Or as percentage 0.328*100= 62.8%