28 is the LCD
The LCD for 3/4 and 4/7 is 28.
The LCD for 4/7 and 3/5 is 35.
63
32 (8x4)
A common denominator is 7.A common denominator is 7.A common denominator is 7.A common denominator is 7.
The common denominator is 28.
To find a common denominator, it's what 4 and 7 go into, and that's 28.
common denominator:60 :)
The least common denominator would be 50
16
A common denominator? 1960000, for example. The LCM is 140.