Equation practice with angle addition

Given the sum of a pair of angles and the algebraic expressions that represent them, form and solve an equation.
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space, m, angle, Q, P, S, equals, 88, degree
space, m, angle, R, P, S, equals, 5, x, plus, 34, degree
space, m, angle, Q, P, R, equals, 8, x, plus, 15, degree
Find m, angle, R, P, S:
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, p, i or 2, slash, 3, space, p, i