WHAT IS THE LCM OF 9,7,6? Notice that, 9, 7, and 6 all go evenly into 126. 126/9=14 126/7=18 and 126/6=21 and 14, 18, and 21 don't have a common factor.
Add or subtract 360 degrees to find a coterminous angle. Since the questions wants you to find one between 0-360, you should subtract 360. 453-360=93 degrees