Question 4361
you can use my <A HREF=/services/rendering/simplifier.mpl>simplifier</A>.

It draws nice cartoons. I did no work in this solution, just invoked the simplifier.

{{{(4x - 6x + 5) + (3x + 14x - 6)}}}: {{{simplify_cartoon( (4x - 6x + 5) + (3x + 14x - 6) )}}}

{{{(4x - 6x + 5) - (3x + 14x - 6)}}}: {{{simplify_cartoon( (4x - 6x + 5) - (3x + 14x - 6) )}}}