Question

уажите общий знаменатель для двобей 1\9 и 1\15

Answer 1

9=3*3
15=3*5
НОК(9,15)=3*3*5=45

$\frac{1}{9}=\frac{1*5}{9*5}=\frac{5}{45}$

$\frac{1}{15}=\frac{1*3}{15*3}=\frac{3}{45}$

Answer 2

Общий знаменатель этих дробей 3

Answer 3

Common Denominator for 1/9 and 1/15

To find the common denominator for the fractions 1/9 and 1/15, we can use the method of finding the least common multiple (LCM) of the denominators. The LCM of 9 and 15 is 45. Therefore, the common denominator for 1/9 and 1/15 is 45.

This can be calculated as follows: - The prime factorization of 9 is 3^2. - The prime factorization of 15 is 3 * 5. - The LCM of 9 and 15 is the product of the highest power of all prime factors involved, which is 3^2 * 5 = 45.

So, the common denominator for 1/9 and 1/15 is 45.

This means that if we want to add or subtract these fractions, we can convert them to have a common denominator of 45 and then perform the operation.

If you have any further questions or need additional assistance, feel free to ask!