I'm confused on these two, if you could help me out with them, that would be greatly appreciated

Answer:
104 degrees
Explanation:
Let x represent the missing angle.
To solve x, we have to note that the external angle of a triangle is equal to the sum of the opposite interior angles.
Let's go ahead and solve x as shown below;
[tex]\begin{gathered} x=78+26 \\ x=104^{\circ} \end{gathered}[/tex]