Two thirds is not larger than four fifths. It's almost 17% smaller.
Two thirds is greater than three fifths.
Three fifths is larger than three eighths
2/3 is not > 4/5
It is larger.
An (uncountable) infinitude of numbers, including two thirds, seven tenths, and pi fifths.
four fifths is greater than two thirds four fifths is 80% Two thirds is 66.666666666666666666666666666 etc.
Convert to a common denominator; convert to decimal; compare denominators (larger denominator = smaller fraction, if the numerator is the same).
No. No. No. No.