2 1/2 divided by 2 1/3

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Step-by-step explanation:

Turn the mixed fractions into improper fractions:

2 1/2 = 5/2

2 1/3 = 7/3

5/2 ÷ 7/3

Replace the division sign with a multiplication sign by reciprocating 7/3.

5/2 × 3/7

Multiply the numerators and the denominators.

= 15/14

Simplify 15/14 by turning it into a mixed fraction.

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I hope this 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.