Question

What must be added to 8a – 4b + c to get 9a – 4b + 7c?​

Answer 1

Answer:

1a - 6c

Step-by-step explanation:

subtract 8a-4b+c with 9a-4b+7c

Answer 2

9a-4b+7c-(8a-4b+c)

= a+6c

so we have to add a+6c

i hope this is helpful for you