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the answer is 45. You compute it by reducing each number to its prime factors, and taking the unique set. 9 factors to 3x3, 15 to 3x5, so the unique set is one 3 from the 9, one 3 that they share and one 5 from the 15. 3x3x5=45. Of course, 135 is also a common denominator but isn't the least. you can always find a CD by multiplying the two. The LCD will make simplification after the addition or subtraction of fractions much easier.

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βˆ™ 14y ago
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βˆ™ 13y ago

Since the two numbers are coprime, LCD(9, 50) = 9*50 = 450

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βˆ™ 14y ago

90 is the LCD of both 10 & 9.

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βˆ™ 11y ago

LCD(10,3)=30

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βˆ™ 11y ago

LCD(10, 11) = 110

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βˆ™ 12y ago

LCD(2, 9) = 18

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βˆ™ 11y ago

18

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Q: What is LCD of 9 and 15?
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What is the LCD for 9 and 15?

LCD(9, 15) = 45


What is the LCD of 15 9 and 8?

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