Compare the fractions

5/15

and

25/75

Given Fractions:   and
Since the denominators are not common (not the same), we need to find the Least Common Denominator (LCD), which is equivalent to the Least Common Multiple of 15 and 75:
LCD = LCM(15, 75) = 75
Express the given fractions as equivalent fractions with respect to the LCD (75):
=   and   = Since the equivalent fractions have common denominators, we can compare the numerators:
25 is equal to 25  (25 = 25)
As a result,    is equal to Therefore,  

5/15

  is equal to

25/75

,  

5/15

=

25/75