5m+72=-2m+52 A - 1 B - 1/7 C 6/7 D 7

First we add 2m to both sides, leaving 7m + 72 = 52 (since - 2m + 2m cancels out). Next, we subtract 72 from both sides, bringing us to 7m = - 20. Solving for m, we get - 20/7. Since this is not one of the listed options, it is possible that the original poster has made a typographical error.