3 1/4 k - 11 3/8 k + 9 1/2 = 1 1/2k - 4 1/3
13/4k - 91/8 k + 19/2 = 3/2 k - 13/3
13/4k - 91/8k -3/2k = -19/2 - 13/3
26 - 91 - 12 -57 - 26
------------------------k = -----------------
8 6
- 77 - 83
------ k = ---------
8 6
- 462k = - 664
664 / 462 = k
332/231=k