Simplify fully 7x+21x−3÷4x2+17x+15x2−3x\displaystyle \frac{7x+21}{x-3} \div \frac{4x^2+17x+15}{x^2-3x}x−37x+21÷x2−3x4x2+17x+15
255 exam-style questions on OCR GCSE Maths Algebraic Fractions. Each one has a worked solution and a mark scheme showing where the marks go.