Question

What should be subtracted form 21a – 2b – 3c to get a+b –2c?​

Answer 1

Answer:

21a - 2b-3c+a+b-2c

21a + a - 2b +b -3c - 2c

22a - b - 5c

Step-by-step explanation:

simply add a+b-2c to 21a-2b-3c  in order to get what needs to be subtracted