Question

Add - 6pq+13qr-5rs,8pq-12qr-23rs and 7pq+8qr+9rs

Answer 1

Answer:

9pq + 9qr - 19rs

Step-by-step explanation:

- 6pq + 13qr - 5rs + 8pq - 12qr - 23rs + 7pq + 8qr + 9rs

Re-arranging,

= - 6pq  + 8pq + 7pq+ 13qr - 12qr + 8qr  - 5rs  - 23rs  + 9rs

= 9pq + 9qr - 19rs

Answer 2

Answer:

1) Add +8pq+7pq, you will get 15pq, then subtract -6pq from 15pq, you will get 9pq.

2) Now add 13qr+8qr, you will get 21qr, then subtract -12qr from 21qr, you will get 9qr.

3) At last add -5rs and -23rs, you will get -28rs, then subtract 9rs from-28rs, you will get -19rs

4) You will get the required answer

I hope it helps