Question

5m-7n,3n-4m+2,2m-3mn-5

Answer 1

Step-by-step explanation:

5m−7n)+(3n−4m+2)+(2m−3mn−5)

=5m−7n+3n−4m+2+2m−3mn−5

=3m−4n−3mn−3

Hence the correct answer is 3m−4n−3mn−3.