improper fraction
posted by Anonymous on .
improper fractions like 4 2/3

There is no question here.
4 2/3 is not an improper fraction. It's called a mixed number.
http://www.aaamath.com/
Click on Fractions in the list at the left, and see if you find the explanations you need. Maybe this? http://www.aaastudy.com/fra57cx3.htm 
find the perimeter of a triangle with sides 12 inches, 9 inches, and 15 inches