To find the number of shoes that are not sneakers, 1. Take the total amount of sneakers, 2. Subtract the amount of sneakers Joy does have. So basically the equation is: NONsneaker shoes = TOTAL shoes - sneakers. To make an actual equation, put the number 6 in the equation to represent the number of sneakers. Then use two DIFFERENT coefficients, one to represent nonsneaker shoes, and the other to represent total shoes. One example of what this equation can look like is… n = 6 - s