Question

What should be added to 7a - 9b + 13c to get 9a +b-c?​

Answer 1

Answer:2a+10b-14c should be added to 7a-9b+13c to get 9a+b-c

Step-by-step explanation:

Answer 2

Step-by-step explanation:

Hi , Let X should be added to 7a - 9b + 13c to get 9a + b - c .

Then,

7a - 9b + 13c + x will be equal to 9a + b - c.

Now,

7a - 9b + 13c + x = 9a + b - c

x = 9a + b - c - 7a + 9b - 13c

x = 9a - 7a + b + 9b - c - 13c

x = 2a + 10b - 14c .

Hence,

2a + 10b - 14c should be added to 7a - 9b + 13c to get 9a + b - c .