
1. Re: Help with fractions
Steve Werner Jul 14, 2016 4:50 PM (in response to Carlos_Sakamoto)I did a little searching for you. What you want are called "stacked fractions". The end of this link:
http://creativepro.com/finetuningyourtypesettingfractions/
"Stacked fractions (aka “nut” fractions) are preferred by some for setting math and other measurements, but are not available in most fonts, nor are they supported by the arbitrary fractionmaking feature of InDesign."
Here's a better, longer answer. Seems that you need to find a font which has stacked fractions. See the end of this link:
typesetting  Fractions in InDesign : Typing (not ½ = Alt + 0189)  Graphic Design Stack Exchange
"But then you'll have to find a high quality font that has a horizontal bar if that's what you're after. I'd start by contacting some good Font Foundry directly and see if they make one or could recommend one. House Industries is one that puts out really nice fonts IMO, not sure if any of theirs has a horizontal fraction style but you could ask them: http://www.houseind.com/"

2. Re: Help with fractions
Peter Spier Jul 14, 2016 4:56 PM (in response to Carlos_Sakamoto)There are also a number of commercial plugins for setting fractions, probably worth looking into if you do a lot of math books.

3. Re: Help with fractions
Steve Werner Jul 14, 2016 4:59 PM (in response to Peter Spier)@Peter,
I looked at some of those in a Google search "InDesign built fractions". Virtually all of them build fractions with slashes rather than vertical stacked fractions.

4. Re: Help with fractions
Peter Spier Jul 14, 2016 5:30 PM (in response to Steve Werner)I've never used an equation editor in ID, but this one has been mentioned here on the forum in the past, and it looks like it would be appropriate: http://www.mathmagic.com/product/pro_features.html

5. Re: Help with fractions
Steve Werner Jul 14, 2016 5:34 PM (in response to Peter Spier)Yes, Peter, it looks like it. Thanks.

6. Re: Help with fractions
George_Salnik Jul 15, 2016 12:55 AM (in response to Carlos_Sakamoto)You can use MathType for this.
Many threads about it  MathType и работа с формулами
(sorry, in Russian, use Google translate)

7. Re: Help with fractions
Peter Spier Jul 15, 2016 4:03 AM (in response to George_Salnik)Yes, MathType is another equation editor frequently mentioned here on the forum.

8. Re: Help with fractions
George_Salnik Jul 15, 2016 11:59 AM (in response to Peter Spier)If you need only this simple fractions, not complex formulas in a text, than do group of two text frames groupped with horizontal line, and paste as anchor.

9. Re: Help with fractions
Carlos_Sakamoto Nov 28, 2016 12:57 PM (in response to Carlos_Sakamoto)Just an update for anyone out there looking at this post that is having the same problem I had here. I found this, a font with opentype stacked fractions. It's called "nutso".