Question

5m + m + 7 n - 5n - m​

Answer 1

(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.

Answer 2

$= 5m + m + 7 n - 5n - m$

$= 6m - m + 7 n - 5n$

$= 5m + 2n$