Only √3 is an irrational number, since you can't write it as a fraction
For this case we must solve the following equation:
Applying distributive property to the terms within the parenthesis we have:
Adding 21 to both sides of the equation:
Dividing between 3 on both sides of the equation:
Answer:
All you do is multiply across. For example...
1/3 x 2/5
Multiply the numerators and denominators.
(1 x 2) / (3 x 5)
= 2/15
If you need to, you can simplify but in this case you don't have to.
I hope this helps love! :)