Subtract 4/21 from 9/60
9/60 - 4/21 is -17/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
9/60 = 9 × 7/60 × 7 = 63/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
4/21 = 4 × 20/21 × 20 = 80/420 - Subtract the two like fractions:
63/420 - 80/420 = 63 - 80/420 = -17/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/60-4/21 9/60-8/21 9/60-4/42 27/60-4/21 9/60-12/21 9/60-4/63 45/60-4/21 9/60-20/21 63/60-4/21 9/60-28/21