Whenever a whole number or fraction is less than something, it will always be to the left of a number that has greater value than itself on a number line. Therefore, since -2/3 is less than 3/5, it will be to the left of 3/5.
Also, just as a rule of thumb, negative fractions and whole numbers are always to the left of positive numbers on number lines!
Two angles are said to be supplementary if they add up to 180 degrees. So the supplement of an angle is obtained by subtracting it from 180. i.e., if x is an angle, its supplement is 180−x
