The sizes of the angles, in degrees, of a triangle are 5x−155x - 155x−15, 2x+102x + 102x+10 and 3x+53x + 53x+5

Work out the value of xxx.
71 exam-style questions on Edexcel GCSE Maths Forming and Solving Equations. Each one has a worked solution and a mark scheme showing where the marks go.