So, I figured out X
so I just need help with what (x+17)°=
and what (3x-31)°

Opposite angles are same.
[tex]\\ \sf\longmapsto x+17=3x-31[/tex]
[tex]\\ \sf\longmapsto 17+31=3x-x[/tex]
[tex]\\ \sf\longmapsto 2x=48[/tex]
[tex]\\ \sf\longmapsto x=\dfrac{48}{2}=24m[/tex]
Answer:
x°=24°
Step-by-step explanation:
Solution,
(x+17)°=(3x-31)° because vertically opposite angles are always equal.
x°+17°=3x°-31°
by subtracting 17 from both, sides we get
x°+17°-17°=3x-32°-17°
x°=3x°-49°
by subtracting 3x from both sides, we get
x°-3x°=3x°-48°-3x°
-2x°=-48°
by dividing both sides with -2, we get
-2x°/-2=-48°/-2
x°=24°