The fraction gets smaller or increases, depending on whether the numerator and denominator are positive or negative.
the entire fraction decreases
The fraction gets smaller.
The value of the fraction increases.
The value of the fraction decreases.
If the numerator of the fraction is increased and the denominator doesn't change, then the value of the fraction increases.
The fraction decreases. 1/3 is smaller than 1/2.
Assuming a proper fraction which is positive (value between 0 and 1), it increases; asymptotically tending to 1 as the amounts that you increase by become larger. If it is negative you must select a negative numerator and a positive denominator. Then it behaves as above. Otherwise you could hit division by 0.
If a fraction's denominator is increased, the number gets smaller. If a fraction's denominator is decreased, the number gets bigger.
You will get an equivalent fraction.
The value of the fraction remains unchanged