The sum of two numbers is 72. One number is 5 times the other. Find the numbers, (smaller value)
(larger value)

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative