3/14 of 10/9 = 5/21 is this right??

Yes.

3/(2*7) * 2*5/(3*3) = (1/7)(5/3) = 5/21

yes

Thank you to both.

To verify if the equation 3/14 of 10/9 is equal to 5/21, we can follow these steps:

Step 1: Multiply the fractions.
To find 3/14 of 10/9, we multiply 3/14 by 10/9:
(3/14) * (10/9)

Step 2: Simplify the multiplication.
Multiply the numerators (top numbers) to get the new numerator and the denominators (bottom numbers) to get the new denominator:
(3 * 10) / (14 * 9)

Step 3: Calculate the numerator and denominator.
Now, simplify the numerator and denominator:
30 / 126

Step 4: Simplify the fraction.
We can simplify this fraction further by dividing both the numerator and denominator by their greatest common divisor (GCD), which is 6:
(30 ÷ 6) / (126 ÷ 6) = 5/21

Therefore, it is correct that 3/14 of 10/9 is equal to 5/21.