Verify that x=a+2bb−2\displaystyle x = \frac{a + 2b}{b - 2}x=b−2a+2b is the subject of the formula 2x+a=b(x−2)2x + a = b(x - 2)2x+a=b(x−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.