LCD is the least
common multiple of the denominators of the fraction. The use of finding the LCD
of a fraction is to simplify the adding, subtracting, dividing and multiplying
the fractions. For ½, 2 is the least
common denominator. For 3/16, 16 is the least common denominator. For 7/8, 8 is
the least common denominator. Each of these fractions cannot be reduced to a
simpler form because these are their simpler forms. If it can be reduced, the
LCD would vary.
