Question

Add 4m +5n+7,-5m-n-3 and 3m-3n+2​

Answer 1

Answer:=3m−4n+3mn−3.

Step-by-step explanation:

5m−7n,3n−4m+2,2m−3mn−5=5m−7n+3n−4m+2+2m−3mn−5

=5m−4m+2m−7n+3n−3mn+2−5

=(5−4+2)m+(−7+3)n−3mn−3

=3m−4n+3mn−3.