My goodness Ginger, 5 edits. I suppose some of those were LaTex frustrations. :)
You are right of course. Neither Strait's answer nor mine was correct.
Also, he/she did mislead me but that is my own fault. Contagious dumbness, well contagious error anyway.
Straight said that 4-x is between 6 and 8 and we all agree it is.
But yes people better stick to doing it more conventionally.
Thanks for noticing the error Ginger.