Answer:
23 degrees
To get this:
5x means 5 squared, also known as 5 times itself. 5x5 is 25.
25 - 2 is 23.
23 degrees should be it.
The value of x is 16 degree
Explanation:
5x-2=78(vertically opposite angle)
or,5x=78+2
or,x=80/5
x=16
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