At should be added to a+
3b+c to get 3a+5b+7c?

2a + 2b + 6c.

Step-by-step explanation:

To find this we subtract :-

3a + 5b + 7c - (a + 3b + c)

= 3a + 5b + 7c - a - 3b - c  Now combine like terms:

2a + 2b + 6c  (answer).

answer: your answer is a

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya