q=5p+3rq = 5p + 3rq=5p+3r p=6p = 6p=6 r=−4r = -4r=−4
Work out the value of qqq.
Practise Edexcel IGCSE Maths Substitution with exam-style questions for IGCSE Maths. 27 questions, matched to the Edexcel IGCSE Maths (4MA1) specification and written in Paper 1 and Paper 2 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.