70
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LCD(7, 5, 10) = 10
the LCD of 2, 9 and 5 = 90
The LCD of 6, 5, and 7 is 210.
The least common multiple (LCM) of 5 and 7 is 35, not the least common denominator (LCD). The LCD is used in adding or subtracting fractions and is the least common multiple of the denominators. In this case, since 5 and 7 are prime numbers and have no common factors, the LCD is simply the product of the two denominators, which is 5 * 7 = 35.
315