Answer:
x=3
Step-by-step explanation:
25x+57+x=45x
26x+57=45x
57=19x
x=57/19
ANSWER
x=96°
EXPLANATION
The sum of exterior angles of a polygon is 360°.
So we add all the exterior angles and equate to 360°
130°+134°+x=360°
264°+x=360°
x=360°-264°
