The sizes of the angles, in degrees, of a triangle are 2x+92x + 92x+9, x+13x + 13x+13 and x−8x - 8x−8

Work out the value of xxx.
Practise Edexcel GCSE Maths Forming and Solving Equations with exam-style questions for Foundation and Higher tier. 78 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.