Given:
There are given the equation:

Step-by-step explanation:
To find the value of a, first, we need to apply the exponent rule:
So,
From the exponent rule:

Then,
Apply the above rule to the given question:
So,

Now,
From the second rule of the exponent:

Then,
Apply above second rule into the given equation:

Then,

Final answer:
Hence, the value of the a is shown below:
