2x+5=-13
Is that what you want?
ANSWER :
The answer is 1) 64
EXPLANATION :
The measurement of the inscribed angle is half the measurement of the intercepted arc.
From the given figure,
The inscribed angle is Angle F
The intercepted arc is Arc BD
So this will become :
add the two equations together
5a+5b=25
-5a+5b=35
------------------
0 + 10b =60
divide by 10
b=6
5a + 5b = 25
5a +5(6) = 25
5a +30 =25
subtract 30 from each side
5a =-5
divide by 5
a = -1
Answer (-1,6)
or a=-1 b=6