3*c - 1 15*c - 6 ------- + -------- 2 2 c c
(3*c - 1*1)/(c^2) + (15*c - 1*6)/(c^2)
(-1.0 + 3.0*c)/c^2 + (-6.0 + 15.0*c)/c^2
(-1.0 + 3.0*c)/c^2 + (-6.0 + 15.0*c)/c^2
-7 + 18*c --------- 2 c
7 18 - -- + -- 2 c c
-7/c^2 + 18/c
-7 + 18*c --------- 2 c
(-7 + 18*c)/c^2