Question

If A=4a-4b-4c
B=7a-7b-7c
then
2B+A​

Answer 1

Answer:

29a+13b-11c

Step-by-step explanation:

Given A=4a-4b-4c

B=7a+7b-c

=2(4a-4b-4c)+3(7a+7b-c)

=8a-8b-8c+21a+21b-3c

=29a+13b-11c

Answer 2

Answer:

A=4a-4b-4c

B=7a-7b-7c

Then, 2B+A=

2(7a-7b-7c) +4a-4b-4c

14a-14b-14c+4a-4b-4c

18a-18b-18c= 18(a-b-c)

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