Do users of RTL languages adopt an LTR standard for mathematics (in the same way they often do when using LTR words or phrases in RTL text)? Non-mathematician here. There is a discussion on this forum titled "Is “applying similar operations from left to right” a convention or a rule that forces us to mark one answer wrong?" I found it trying to answer a question I have. I could not comment as I am new here (trolling protection I guess) 
My interest is software localisation. My question is whether mathematics is globally written Left to Right (LTR). i.e. do those substantial countries that use a RTL languages adopt an LTR standard for mathematics (in the same way they often do when using LTR words or phrases). 
Note that I am not asking what is mathematically correct (i.e. use parenthesis properly) - I am asking what is commonly actually done? 
Thanks
 A: Most university-level math education has conformed to a left-to-right standard, regardless of how the native language is written. However, pre-university education differs, and it depends on the region.
For instance, see here: http://en.wikipedia.org/wiki/Modern_Arabic_mathematical_notation.
One of the reasons for the predominance of left-to-right mathematical writing is that a majority of mathematical papers are written in left-to-right languages. Furthermore, it is difficult to find equivalent texts for some (advanced) topics written in a right-to-left sense. Even translation is particularly difficult. While there might be a translation for "limit" or "derivative" in some languages, there often isn't a direct translation for something like "cotangent bundle" or "Hom functor." How does one translate an advanced text when the nomenclature is so-far removed from the native language? (One may even argue that some of the nomenclature is pretty far removed from English, as well. "Eigenvector" is a horrible Frankenstein's monster of a word, grammatically speaking. And don't even get me started on "homomorphism" vs. "homeomorphism").
In fact, this phenomenon has led to English becoming almost mandatory for university-level technical education in many countries.
A: In Hebrew (& in Israel) you always read equations in LTR.
There are no exceptions (not even inline equations, as one might expect).
RTL math doesn't exist here, so that's just a no, and it would be just as confusing and odd as it would in any other language or place.
So basically I'd say that no one will understand you, certainly won't bother to get accustomed to read it, even temporarily, and no teacher would so much as grade anything like that.
Note: I don't know how it is in the place Arkamis derived his answer from, but in Israel the reason isn't because of the ubiquitous existing text and material in LTR. The reason is just that it would feel very unnatural otherwise.
A: Just put in some parentheses, and then you don't have to worry about the LTR-vs-RTL issue. The expression $(a-b)-c$ means the same thing everywhere.
