Any rational number has a reduced form For example 12/70, 18/105, 600/3500 all represent the same reduced rational number, 6/35. Write down a characteristic of the numerator and denominator of a...

Any rational number has a reduced form For example 12/70, 18/105, 600/3500 all represent the same reduced rational number, 6/35. Write down a characteristic of the numerator and denominator of a reduced fraction (hint: look at the prime factors).