Find m
4x-3y=17
-78 + my = 2

Step-by-step explanation:

Given: 4X-3Y=17

so, 4x-17 = 3Y

=> Y = (4X-17)/3

Substituting the value in second equation, we get,

=> -78 + m(4x-17)/3 = 2

=>2+78 = m(4x-17)/3

=> 80*3 = m(4x-17)

=>m= 240/(4x-17)

Hope It Helps!!

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.