5/8 - 1/4 = 5/8 - 2/8 = 3/8 (make all fractions equivalent fractions with a common denominator - in this case, a common denominator of 8 - and then subtract the numerators).
The common denominator of 5/8 and 3/4 is 32.The lowest common denominator (LCD) is 8.The highest common denominator (HCD) is 32.
The least common denominator is 280.
A common denominator, though not the least, is 80.
40
1
1
No
The only common factor between 3, 5, and 8 is 1, so the least common denominator is 3 * 5 * 8 =120
8
The common denominator of 5 over 8 and 4 over 9 is 72.
The lowest common denominator of 5/6 and 3/8 is 24.