Question 1194045
<pre>
1.  (R ∨ M) ⊃ S
2.  M ∨ C
3.  (C ∨ H) ⊃ R
4.  ~M                /S

5.  C           2,4, DS 
6.  C ∨ H         5, add.
7.  R           3,6, MP
8.  R ∨ M         7, add.
9.  S           1,8, MP

Edwin</pre>