15 points help ASAP.
And show your work please

Step-by-step explanation:
Since DEF is a straight line hence its measure wilp be 180°
And ,
=> /_ DEG + /_ GEF = 180° ( linear pair )
=> 23x - 3° + 12x + 8° = 180°
=> 35x = 180° - 8 + 3
=> 35x = 175°
=> x = 175°/35
=> x = 5°