Creating true inline equations in PowerPoint
Applies to:

MathType 6 and later for Windows
MathType 6 and later for Mac 
PowerPoint 2013 and later for Windows
PowerPoint 2016 for Mac 
Situation:
You're working in PowerPoint and you've been inserting MathType equations and
moving them into position every time. If there is inline text that follows the
equation, you must add enough space to allow for the equation. If you add text
above the line containing the equation, or if you edit the text, you have to
move the equation every time. It would be nice if the equations were truly
inline, like in Word, and would flow with the text.
Background:
PowerPoint doesn't allow for inline objects of any type  drawings, photos,
logos, charts, etc.  and since MathType equations are "objects" that are
inserted onto the slide, they cannot be inline either. Therefore, the
method described here uses MathType, but the equations produced for PowerPoint
are not MathType equations; they're "OMML"
equations.
We do offer one workaround in our article
MathType Works With PowerPoint,
and that's still a viable option. The method below presents a different
solution.
Note: Since PowerPoint 2016 for Mac interacts with
MathType in a way quite differently from any of the other versions of PowerPoint
covered here, we cover that version separately below. 
Creating inline equations in PowerPoint for Windows
Since PowerPoint does not allow inline objects, which all MathType
equations are, we're going to use MathType to create the equation, but the
equation that's actually on the PowerPoint slide will be an OMML equation, as
described above.
 Open MathType as a separate application  do
not open it by clicking MathType on the MathType tab in
PowerPoint. If you're unfamiliar with opening MathType as a
separate application, you can get to it through the Windows
Start menu.
 Create
the equation in MathType, then select & copy it ("cut" is
actually better than "copy") and paste it onto the slide.
Tip: You'll know it's in the right format
if you click inside the equation, and you seen the Equation
Tools tab on the ribbon:
 If you clicked inside the equation, part of it will be
shaded. If you didn't click inside, or if none of it is shaded,
click inside and it should look something like this:
 Now "select all". Easiest way to do that is with the
shortcut Ctrl+A. Now it looks like this:
 Now copy it  Ctrl+C. At the point in your slide’s text,
insert an equation, either from the Insert tab on the ribbon, or
with the shortcut Ctrl+=. It should look something like this:
 Don’t click inside the gray area, just paste. Now you’ve got
an OMML equation there – the one you copied from MathType, and
it’s already sized correctly. Also, note above that I had a
space after the colon and before the equation. No longer. I must
go back and add a space:
 Remember, this is an OMML equation, not a MathType one. If
you need to edit it, you can click inside and edit it directly
if you want. If you'd rather use MathType, you can do that too.
Click inside, select all, copy, then paste into MathType. Make
your edits, then select & copy it from MathType, then paste in
place of the old equation (which should still be selected).
Creating inline equations in PowerPoint 2016 for Mac
Since PowerPoint does not allow inline objects, nor any objects that
are not Microsoft Office objects, we're going to use MathType to create the equation, but the
equation that's actually on the PowerPoint slide will be an OMML equation, as
described above. We'll also be using Word 2016, since it is
able to create an OMML equation from MathType, and PowerPoint is not.
 Open MathType from the Applications folder.
 In MathType's Preferences > Cut and Copy Preferences, choose
"MathML 2.0 (namespace attr)" from the MathML or TeX section.
Click OK to close the dialog.
 Open Word 2016.
 Create
the equation in MathType, then select & copy it ("cut" is
actually better than "copy") and paste it into the
Word document.
Tip: You'll know it's in the right format
if you click inside the equation, and you seen the Equation
tab on the ribbon:
 Click the blue tab to the left of the equation. If the blue
tab isn't showing, click inside the equation, then click the
blue tab. This will select the equation:
 Copy the equation (again, "cut" is actually better than
"copy"). At the point in your slide’s text, insert an equation,
from the Insert tab on the ribbon. It should look something like
this:
 Don't click inside the gray area; just paste the equation
you copied from Word. It should look something like this:
 Remember, this is an OMML equation, not a MathType one. If
you need to edit it:
 You can click inside and edit it directly
if you want.
 If you'd rather use MathType, you can do that too.
Click inside, select all, copy, then paste into Word 2016 (it
will not paste directly into MathType).
 Before you paste into MathType, confirm
Word's settings are correct for this. In Word's
Format menu, choose Equation Options (at the
bottom). Click to select the option to "Copy
MathML to the clipboard as plain text". Click
OK. You should only need to do this once, but in
the future if equations don't paste properly
into MathType, check the setting to make sure
it's correct.
 Copy it from Word and paste into MathType.
Make your edits, then replace the old equation
in PowerPoint with the newlyedited one, using
the techniques above.
If you have a tip that you'd like to pass along to us for possible inclusion
in our Tips & Tricks, email us.
