7/28ths and 16/28ths
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The LCD of 2/7 and 4/5 is 35.
no. four sevenths is over one half and one fourth is half of one half so how would one forth and four sevenths be the same?
the common denominator is 35: 4/5 = 28/35, and 3/7 = 15/35, 28/35 - 15/35 = 13/35.
3/5 - 4/7 the common denominator is 35 21/35 > 20/35 so, 3/5 is a little bigger.
The common denominator refers to a multiple that is COMMON to two or more numbers. You have only one number in the question! The common denominator for a number is itself.