In ΔNOP,
N
P
‾
NP
is extended through point P to point Q,
m
∠
O
P
Q
=
(
6
x
−
15
)
∘
m∠OPQ=(6x−15)
∘
,
m
∠
P
N
O
=
(
2
x
+
18
)
∘
m∠PNO=(2x+18)
∘
, and
m
∠
N
O
P
=
(
2
x
−
13
)
∘
m∠NOP=(2x−13)
∘
. What is the value of
x
?
x?