Answer:
X = 60
Step-by-step explanation:
Since these are vertical angles, they are equal to each other.
so we create the equation 3x - 10 = 170
Add 10 to each side to isolate the variable
3x - 10 = 170
+10 +10
3x = 180
divide each side by 3 to further isolate the variable
that leaves us with x = 60
this is the final answer, x = 60
