Answer:
Just did it, had a good guess.
Step-by-step explanation:
A exterior angle of a polygon is an angle outside the polygon formed by one of its sides and the extension of an adjacent side.
-3x+2=11
-3x=11-2
-3x=9
x=9÷(-3)
X=3
What you have to do is minus 2 from 11 and you get 9
Now divide 3 into 9 and you get 3
x=3 you can also plug 3 for x to see if the equation is right
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