[sirtel]

1. 5+9=14

2. let 9=10-1, 5+9=10-1+5=15-1=14

3. let 9=5+4, 5+9=5+5+4=14

4. cann't make it up

[ww2]

you missed two most important methods:

5+9 = (((((((((5+1)+1)++1)+1)+1)+1)+1)+1)+1) 5+9 = 9 + 5 =...

[ozh]

I truly pity the youth in whatever country thought that is smart