Answer:
The required expression is \(12+\frac{9}{y}\).
Step-by-step explanation:
Consider the provided phrase.
The sum of 12 and the quotient of 9 and a number
Let the number is y and the quotient of 9 and a number can be written as:
\(\frac{9}{y}\)
Thus, the sum of 12 and the quotient of 9 and a number can be written as:
\(12+\frac{9}{y}\)
Hence, the required expression is \(12+\frac{9}{y}\).