Solve the simultaneous equations
2x=7+yx+3y=5 \begin{aligned} 2x &= 7 + y \\ x + 3y &= 5 \end{aligned} 2xx+3y=7+y=5217 exam-style questions on OCR GCSE Maths Simultaneous Equations. Each one has a worked solution and a mark scheme showing where the marks go.