Answer:
X =32 degrees
Step-by-step explanation:
There is 360 degrees in a 4 sided shape. So first:
360 - 164 = 196 degrees
Now the other three angles should equal 196 degrees.
196 = 4x + (x-5) + (x+9)
196 = 6x +4
192 = 6x
x = 32 degrees
