Solve algebraically the simultaneous equations
x2+y2=20 x^2 + y^2 = 20 x2+y2=20 x+3y=10 x + 3y = 10 x+3y=10117 exam-style questions on AQA GCSE Maths Quadratic Simultaneous Equations. Each one has a worked solution and a mark scheme showing where the marks go.