Question

Can someone please let me know if there is some error in the 2nd process. This question has really confused me this morning.
Thank you. ​

Answer 1

Answer:

Not in second but I think there is an error in 1st process

(1/2)+(1/2)-(1/2)-(1/2)

1-1

0

Answer 2

Answer:

the question is wrong. RHS should be 2.

your first process is right

second process is wrong