Question

plz help me fast and plz show the process​

Answer 1

Answer:

4mn+m+n-(-mn-m+n)=4mn+m+n+mn+m-n

=5mn+2m

Answer 2

Answer:

(-mn-m+n) from (4mn+m+n)

4mn+m+n-(-mn-m+n)

4mn+m+n+mn+m-n

4mn+mn+m+m+n-n

5mn+2m-0

5mn+2m