k=9mnk = 9mnk=9mn
m=−3m = -3m=−3 n=−5n = -5n=−5
Work out the value of kkk.
Practise OCR GCSE Maths Substitution with exam-style questions for Foundation and Higher tier. 100 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers 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.