20x4=−15y7z⇔4x4=−3y7z i have to decided if this is a multiplicative cancellation property, additive cancellation property, zero factor property or a false statement and then identify the quantity that is added or multiplied by both sides but I keep getting the answer wrong.

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.

tip $2.90

total $17.40

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)

one peck is 9.309 quarts

9.309x 2