Sometimes the numerator of a fraction will divide evenly into the denominator. The fraction can be reduced by replacing the numerator with a 1 and dividing the original denominator by the numerator to get a new denominator.
EXAMPLES:

because 4/2 = 2 

because 6/2 = 3 
Fractions in which the numerator and denominator contain the same factor can also be reduced by removing the common factor from both the numerator and the denominator.
EXAMPLES:

Remove the 3's because they are in both the numerator and the denominator, and you get>  2/3 

Remove the 7's and you get:  3/4 
The reason you can remove the 7's is because 7/7 = 1, so it is the same as:
