Verify that x=5(y+12)2\displaystyle x = \frac{5(y + 12)}{2}x=25(y+12) is the subject of y=25x−12\displaystyle y = \frac{2}{5}x - 12y=52x−12
210 exam-style questions on OCR GCSE Maths Changing the Subject of a Formula. Each one has a worked solution and a mark scheme showing where the marks go.