Q: What is a common denominator of 4 over 9 and 8 over 15?

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The LCD for 1/5 and 4/15 is 15.

To simplify a fraction, you need to identify any common divisors between the numerator and the denominator. In this case, both the numerator (15) and the denominator (60) can divide by 15. Do this and we get 1/4. There are no common divisors left. Therefore, 15/60 is simplified as 1/4.

20 is the lowest common denominator for 4 and 10.

1320

(4/5) - (4/3) = ? First, determine the least common denominator -- you need to make the denominator (number to the right of the "/") the same for both fractions. You can do this by multiplying the the denominators of the two fractions: 5x3 = 15 Then multiply the numerator (number to the left of "/") of one fraction with the denominator of the second fraction: [(4x3)/15] - [(4x5)/15] [12/15] - [20/15] Now, you can just subtract the nominators like you normally would. Don't forget to indicate the denominator.

Related questions

20, although if you reduced 15/20 to 3/4, the common denominator would be 4.

The LCD for 1/5 and 4/15 is 15.

30

The common denominator of 4/8 and 11/15 is 90.

4/9 = 20/45 8/15 = 24/45

The common denominator of 5 over 8 and 4 over 9 is 72.

4

20 is the lowest common denominator for 4 and 10.

To simplify a fraction, you need to identify any common divisors between the numerator and the denominator. In this case, both the numerator (15) and the denominator (60) can divide by 15. Do this and we get 1/4. There are no common divisors left. Therefore, 15/60 is simplified as 1/4.

60 is the least common denominator of 3 4 5 6 10 and 15.

15

60