You tried to put a condition inside of a math equation?!
Well, there's your problem...
Facer supports conditions only when they are in the most outside layers of the math.
That's why I pointed the problem with bracket, because right now facer will see this:
...as the question in that condition.
And, when it will count brackets in that question it will break.
It might work in the editor (because it runs on your PC), but not in Android Wear or Tizen device.
Not only that but if that block of text is just one line it won't work for another reason - there are 2 conditions there.
Facer doesn't allow 2 conditions in one line.
Not next to each other, not one inside of the other.