In ΔNOP, start overline, N, P, end overline
NP
is extended through point P to point Q, m, angle, N, O, P, equals, left bracket, 3, x, plus, 19, right bracket, degreesm∠NOP=(3x+19)
∘
, m, angle, P, N, O, equals, left bracket, 3, x, plus, 8, right bracket, degreesm∠PNO=(3x+8)
∘
, and m, angle, O, P, Q, equals, left bracket, 8, x, plus, 15, right bracket, degreesm∠OPQ=(8x+15)
∘
. Find m, angle, P, N, O, .m∠PNO.