Make x x\,x the subject of the formula a=x+cx−b\displaystyle a = \frac{x+c}{x-b}a=x−bx+c
Hence find the value of x x\,x when a=3a=3a=3, b=4b=4b=4 and c=2c=2c=2
215 exam-style questions on OCR GCSE Maths Rearranging Harder Formulae. Each one has a worked solution and a mark scheme showing where the marks go.