Evaluate frac2m−nm+n\\frac{2m-n}{m+n}frac2m−nm+n when m=7m=7m=7 and n=3n=3n=3.
frac1110\\frac{11}{10}frac1110
111
frac1710\\frac{17}{10}frac1710
frac12\\frac{1}{2}frac12