K=9w+9zK = 9w + 9zK=9w+9z
Make w w\,w the subject of the formula.
Practise OCR GCSE Maths Changing the Subject of a Formula with exam-style questions for Foundation and Higher tier. 80 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.