190 - Simultaneous equations by elimination 1 (intro)
191 - Simultaneous equations by elimination 2
192 - Simultaneous equations by elimination 3
193 - Simultaneous equations by elimination 4
194 - Simultaneous equations by substitution
195 - Simultaneous equations (in context)
246 - Simultaneous equations involving quadratics
(thanks to AQA Maths and JustMaths)
Email your teacher if you would like the mark scheme