3x+3> -2x+2 3x+3-3> -2x+2-3 3x+2x> -2x+2x-1 5x> -1 x> -1/5 5(y+2)+3y> -6

Step-by-step explanation:

i)

adding and subtracting 2x and 3 from both sides we get

Dividing both sides by 5 we get

2.

Subtracting 10 from both sides we get

Dividing both sides by 8 we get

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.