jwiegley/numbers — pull request #14 by quickdudley (2014-08-22 08:00:45+00:00)
Title: Data.Number.Symbolic: Added some simplification rules for addition

The following transformations are now possible:
x + x -> 2*x
x + 2 * x -> 3*x
2 * x + x -> 3*x
2 * x + 2 * x -> 4*x