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The least common denominator for 4 5 and 11 is 1.
There is an infinite number of common denominators for these two fractions. The lowest common denominator is 45.
The LCD for 1/5 and 4/15 is 15.
33/4 + 11/2 = 51/4 Convert to improper fractions, add (converting to fractions with a common denominator) and simplify the result. 33/4 = 15/4 11/2 = 3/2 = 6/4 ⇒ 33/4 + 11/2 = 15/4 + 6/4 = 21/4 = 51/4
The common denominator of three fourths and one fifth is twenty. The fractions including the common denominator can look like this: 3/4 to 15/20 and 1/5 to 4/20. Hope this helps!! ^^