Answer:
6m + 5
Step-by-step explanation:
This is the answer because:
1) First, find all the like terms
Like terms: 17m, -9m, -2m
Like terms: -2, +7
2) First, do 17m - 9m which is 8m
2) Then do 8m - 2m which is 6m
3) Finally, do -2 + 7 which is 5
Therefore, the answer is 6m + 5
Hope this helps! :D