Answer:
-12c-5
Step-by-step explanation:
Step 1- Distribute into the parenthesis(Since there's nothing next to the parenthesis to multiply, there is a 1).
-9c-1(5-3c)
-9c-5(1)-3(1)c
Step 2- Multiply,
-9c-5-3c
Step 3- Add common variables.
(-9c-3c)-5
-12c-5
