In ΔHIJ, m, angle, H, equals, left bracket, x, minus, 12, right bracket, degreesm∠H=(x−12) m, angle, I, equals, left bracket, x, minus, 5, right bracket, degreesm∠I=(x−5) and m, angle, J, equals, left bracket, 9, x, minus, 1, right bracket, degreesm∠J=(9x−1) What is the value of x, question markx?