I whipped up this worksheet out of a balance problem worksheet I found online years ago and some desmos activities on systems. I really wanted to do some of the desmos activites themselves, but I tried one and my students couldn't stay on-task. They kept cutting and pasting quotes from the communist manifesto and advertisements for bitcoin into the short response boxes. Sigh. This activity that I mashed together actually went really well. We did most of the exercises as think-pair-shares and they remembered enough from algebra 1 for it to be a quick, easy and intuitive review of systems solving. I did steal everything so I take no credit except in terms of the presentation.