Answer:
x=22°
Step-by-step explanation:
Opposite angles are equal, so that must mean that:
3x-14 = 4(x-9)
expand the brackets.
3x-14 = 4x-36
And then rewrite to get x on one side, by minusing 3x on both sides.
-14=x-36
Add 36 on both sides.
22 = x
so, x=22°
