Open Middle Triangle Angle Sum Problem

Creation of this resource was inspired by this Open Middle problem by Franco D. Adkins:
Using the digits 1-9 at most one time each, fill in the blanks so that when you solve for [math]x[/math], it is a whole number. [br][br][img width=271,height=196]https://lh3.googleusercontent.com/mKHBQcMWYrqWwvF5m5zDGd-a380av5CUq_g9gKBDvpJO0dDDpQoHrtNB-0_IgNnJS7FyzrwURiYzmRPRptkshFkT0thEE3NNJ6g7vGDtoLZ392y-f2iZR3ZNKYqz_CSLegDdsRZe[/img][br][br]You can use the app below to create such a triangle that's drawn to scale. Use the sliders to change the values of the digits (blanks) in each algebraic expression (for [math]m\angle A[/math] and [math]m\angle B[/math]). [br][br][b]How many solutions can you find? List them here: [/b]
You can create different variations of this problem by unlocking angle C and changing its measure.
Teachers:
For a version without the [b]Show angle measures [/b]checkbox (lower left), [url=https://www.geogebra.org/m/ew58arxq]click here[/url].
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Information: Open Middle Triangle Angle Sum Problem