The graphs of the equations $y=3x-20$ and $y=-2x+10$ intersect at the point $(6,-2)$. without solving, find the solution of the equation $3x-20=-2x+10$.

The solution is

Step-by-step explanation:

The given equations are

and

The graph of the two equations intersects at as show in the graph in the attachment.

The point of intersection of the two graphs is the solution to system of equations.

Hence the solution is

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.