Welcome, fellow Mathsketeers! This week, Bobby and Susan discuss the language of algebra and why it's so important. Bobby sets a puzzle related to the topic, and it just so happens to feature one of Susan's heroes. Our guest is the comedian Ken Cheng who tells us about his maths story which involves learning long division when he was young, studying Maths at Cambridge, dropping out to be a full-time online poker player and then discovering comedy. We finish off with a maths fact and we'd love to hear yours - tweet us @mathsappeal!