To solve this we must isolate x which involves having the variables on one side and the numbers on the other.
First add 2m to both sides
3m+7/2=-2m+5/2
5m+7/2=5/2
Then we subtract 7/2 from both sides
5m+7/2=5/2
5m=-1
Finally we divide both sides by 5
5m/5=-1/5
Our final answer is -1/5
So the answer is B
Hope this helps!
