In ΔPQR, m, angle, P, equals, left bracket, x, minus, 17, right bracket, degreesm∠P=(x−17)
∘
, m, angle, Q, equals, left bracket, 4, x, minus, 5, right bracket, degreesm∠Q=(4x−5)
∘
, and m, angle, R, equals, left bracket, 5, x, plus, 12, right bracket, degreesm∠R=(5x+12)
∘
. What is the value of x, question markx?
