Sagot :
Well first just multiply the things in the parenthesis by 3 and get -15c + 12d and then subtract 15 from 11 (because of the c) and get -4c +12d
Answer:
-4c+12d
Step-by-step explanation:
11c + 3(-5c + 4d)
11c-15c+12d
-4c+12d