Comparing two rational numbers
    In order to compare any two rational numbers, we can use the following steps :
    Step I     Obtain the given rational numbers.
    Step II     Write the given rational numbers so that their denominators are positive.
    Step III Find the LCM of the positive denominators of the rational numbers obtained in step II.
    Step IV Express each rational number (obtained in step II) with the LCM (obtained in step III) as common denominator.
    Step V     Compare the numerators of rational numbers obtained in step IV. The number having greater numerator is the greater rational number.