Make x x\,x the subject of the formula 1y=1x+1z\displaystyle \frac{1}{y} = \frac{1}{x} + \frac{1}{z}y1=x1+z1
Practise OCR GCSE Maths Rearranging Harder Formulae with exam-style questions for Foundation and Higher tier. 52 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.