to convert the fractions to equivalent forms, we need to make sure that they have the same denominator (number on the bottom). the lowest common multiple of both 3 and 5 is 15, hence:
-2/3 = -10/15 (×5)
-3/5 = -9/15 (×3)
thus, we can see that -10/15 is smaller than -9/15, and -2/3 is <u>smaller</u> than -3/5.