Solve 2x+y+z=92x+y+z=92x+y+z=9, x−2y+z=4x-2y+z=4x−2y+z=4 and 3x+y−2z=−13x+y-2z=-13x+y−2z=−1.
8 exam-style questions on CCEA A Level Maths 1.1.8 Algebra and functions. Each one has a worked solution and a mark scheme showing where the marks go.