An equation is shown below: 3(5e - 9) = -72 Part A: How many solutions does this equation have? Part B: Solve this equation showing your work (at least three steps).

A: 1 B: e=-3

Step-by-step explanation:

Step 1: distribute: 15e-27=-72

Step 2: Combine like terms:  15e=-45

Step 3: divide both sides by 15: e=-3

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.