sorry again for asking this but can someone explain this and give me the answer. Been having a hard time learning this.
![sorry again for asking this but can someone explain this and give me the answer Been having a hard time learning this class=](https://us-static.z-dn.net/files/d87/69483a9e215ac7b2ff4eb67f7c864937.png)
Hey!!!
In question no.4, we have to subtract the equation.
In question no.5 we have to add the equation.
Hope it will help you...