You can use the site's calculator if needed, which can be accessed by clicking on the logo on the main forum screen or the "home" tab. -72/8 is the same thing as 72/8 and adding a negative symbol, thus making 9 (72/8) in -9.
You can use the site's calculator if needed, which can be accessed by clicking on the logo on the main forum screen or the "home" tab. -72/8 is the same thing as 72/8 and adding a negative symbol, thus making 9 (72/8) in -9.