4 1/5 + (-1 1/3) simplest form

1 13/15 or 28/15

Step-by-step explanation:

Convert a mixed number 3 1/ 5  to an improper fraction: 3 1/5 = 16/5

Convert a mixed number 1 1/3 to an improper fraction: 1 1/3 = 4/3

Make the denominator the same number: 16/5=48/15; 4/3=20/15

Combine: 48/15-20/15=28/15=1 13/15

a triangular prism is a 3 dimensional shape composed of triangles and rectangles. it is made from two triangular bases and three rectangular sides.