Answer :
[tex]9v=171[/tex]
Explanation
Step 1
Let v represents the Vidya's age
product= multiplication
is="="
Now
the product of the vidya's age and 9
would be
[tex]v\cdot9=9v[/tex]and
the product of the vidya's age and 9 is 171​
[tex]9v=171[/tex]I hope this helps you