We know that
• Clary's school day is 8 3/4 hours.
,• She has seven classes that are 2/4 hours long.
First, we have to transform the mixed number into a fraction
[tex]8\frac{3}{4}=\frac{8\cdot4+3}{4}=\frac{32+3}{4}=\frac{35}{4}[/tex]Now, we multiply all seven classes by 2/4 hours to find the total amount of time she has been in class.
[tex]\frac{2}{4}\cdot7=\frac{14}{4}=\frac{7}{2}[/tex]Then, we subtract school day hours with 7/2.
[tex]\frac{35}{4}-\frac{7}{2}=\frac{35\cdot2-7\cdot4}{8}=\frac{70-28}{8}=\frac{42}{8}=5.25[/tex]The process to transform a mixed number into a fraction is
