Answer:
3x-4=107* why vertical angles
Step-by-step explanation:
3x-4=107
add 4 on both sides
3x=111*
x=37
x = 37°
The other two angles equals 73°. both of them are 73°
107°+ 4° = 111
3x = 111°
360 - 214 = 146°
146 / 2 - 73°
