Consider the question. Jessica has a basic cable television service for $15 per month. If she adds the movie channels, it will cost an additional $12 per month. The sports channels cost $3 less per month than the movie channels. If Jessica adds the movie channels and the sports channels, what will her total monthly payment be?
 What is the step-by-step reasoning process to arrive at the answer: 36?
The sports channels cost $12 - $3 = $9 per month. Jessica has to pay $15 + $12 + $9 = $36 in total per month.