q=6p−rq = 6p - rq=6p−r p=−4p = -4p=−4 r=5r = 5r=5
Work out the value of qqq.
Practise Oxford AQA IGCSE Maths Substitution with exam-style questions for Core and Extended tier. 27 questions, matched to the Oxford AQA IGCSE Maths (9260) specification and written in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) 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.