is equal to

How did we get the value?
Let's solve the expression:
1.

To subtract these fractions, find a common denominator, which is 9 in this case:

2. Multiply the result by
:

3. Subtract
from the above result:

To subtract, use the common denominator of 9:

4. Simplify the fraction:
can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 3:

So,
is equal to
