200
7/12 of the students in the Running Club ran the entire the Capital 10K. Another 2/12 of the club members ran, but had to walk during parts of the race. The rest of the club members did not participate in the race at all.
Write equations that could be used to find the fraction of the Running Club members that did not participate?
NOTE: This is a 2-step problem so there are 2 equations!
7/12 + 2/12 = 9/12 (students who participated)
and
12/12 - 9/12 = 3/12 (students who did not participate)