Answer:
X= 12 (see explanation)
Step-by-step explanation:
I'm doing my best to interpret this without an image. So angle S= 43 degrees, T is 7x-6 and R is 4x+11.
If the sum of the arc RTS= 360 degrees, then do
360= 43+ (7x-6) + (4x+11)
X= 312/11 <- this looks iffy
If the sum of the arc RTS= 180 degrees, then do
180= 43+ (7x-6) + (4x+11)
X= 12 <- this looks like a normal solution