Answer:
13
Step-by-step explanation:
From the same external point, the tangent segments to a circle are equal.
NP = PQ
x + 6 = 2x - 7
6 + 7 = 2x - x
13 = x
x = 13
x=13
the two lines are equal
x+6=2x-7
6+7=2x-x ( isolate x )
13=x
