Answer :

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

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