Getting rid of the fraction bar and "Original" size issue

[ExtremeConfusion]

So, this is the issue I am having:

I want 2 numbers stacked vertically but they should be aligned in the middle with the cdot sign.
The “frac” or “over” commands produce what I want, but with a fraction bar. stack, matrix and binom commands on the other hand do remove the fraction bar, at the cost of misaligning it. Is there a “clean” way of achieving this.

Also, sometimes I notice that right-clicking an embedded Math formula and selecting “Original” size changes its size slightly. How does this happen in the first place? I cannot change the size of formulas by dragging them. I don’t ever want them to get out of their “original” size anyway.

[Regina]

You could wrote them as indices. In menu Format > Font Size you can change the size for indices from 60% to 100% or you set the font size individually at the index itself. If the distance is not large enough you can add a small gap.

7 cdot 2 ^{ size 12 {`3}}_{size 12 {`4}}

You can determine the vertical position of indices in Format > Spacing, Category Indexes

[ExtremeConfusion]

Thank you. While this solution works almost perfectly, it feels kind of off to me. In LaTeX, you could make individual brackets, etc. disappear by adding “none” after it. There is phantom command but it won’t work for mathematical signs. Is this the best solution with LO Math?
I hope they consider adding a command that can make signs or anything else invisible.

[koyotak]

@Regina

7 cdot 2 ^{ size 12 {3}}_{size 12 {4}

i have created with it a new element “My Formula 1”. To safe it and to transfer it from one computer to another, where can i find this individual formula in my memories?