Simplify by combining like terms: 18a + 2.5a

There is an entrance to the computer room at point e which lies on ab and is 5 feet from point a. plot point e on the coordinate plane. find the distance from the entrance at point e to the printer at point e

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.