Solve 3a+b−c=83a+b-c=83a+b−c=8, a−2b+c=−5a-2b+c=-5a−2b+c=−5 and 6a−5b+2c=−136a-5b+2c=-136a−5b+2c=−13.
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.