Input               pullout            pullout_num         =
pullout_const

     2 %I b + 2 a
     ------------           %I b + a             %I b + a             %I =
     b + a
          2

                 2
   (2 %I b + 2 a)                   2                    2               =
   2
   ---------------        (%I b + a)           (%I b + a)           (%I =
b + a)
          4

                     2                                         2
(SQRT(2) x + SQRT(2))              2      (SQRT(2) x + SQRT(2))          =
    2
----------------------      (x + 1)       ----------------------      (x =
+ 1)
          2                                         2

      2                     2                    2                    2
   5 y  - 15 x + 10     5 (y  - 3 x + 2)     5 (y  - 3 x + 2)     5 (y  =
- 3 x + 2)

       a C + a                 a                 a C + a              a =
C + a
       -------                 -                 -------              =
-------
       b C + b                 b                 b C + b              b =
C + b

       a C + a             a (C + 1)             a C + a              a =
C + a
       -------             ---------             -------              =
-------
       b C + C             (b + 1) C             b C + C              b =
C + C