ANSWER
A. 33
EXPLANATION
By the angle addition theorem, the sum of all these angle measures is 180º:
[tex]104+(x)+(x+10)=180[/tex]
Solving for x:
[tex]\begin{gathered} 104+x+x+10=180 \\ 104+2x+10=180 \\ 2x+114=180 \\ 2x=180-114 \\ 2x=66 \\ x=\frac{66}{2} \\ x=33 \end{gathered}[/tex]
