Answer:
15/8
Explanation:
Let's assume that the number is 'n'. Provided that number 'n' minus -15 is equal to the product of the number 'n' and 9. Simply jot down the above statement in mathematical form:

Now, simply solve the above equation.

Take the like terms on one sides.

Do the rest calculations.


Hence, the required value of n is 15/8.