In this case, we'll have to carry out several steps to find the solution.
Step 01:
Data:
algebraic expression:
13 (c - 9)
Step 02:
written expression:
13 (c - 9):
the difference of c and 9, multiplied by 13.
The answer is:
the difference of c and 9, multiplied by 13.
(thirteen times the difference of c and 9)