How to justify a line of text in the GUI?

[Evan Aad]

When composing a bilingual document that combines a right-to-left
language, such as Hebrew, with a left-to-right language, such as
English, is there a way to justify a line of text to the right or to
the left in the GUI when the text in that line contains no letters of
the alphabet?

For example, when writing a mathematical text in Hebrew, intended be
typeset by the TeX system, the following display-mode equation may
occur:
$$
x+y=z
$$

In this case the Emacs GUI would right-justify the first pair of
dollar signs, whereas the next two lines would be left-justified. This
causes a disruption of the logical cohesiveness of the LaTeX code. Is
there a way that I could left-justify the first pair of dollar signs?