Subtract 15/21 from 4/60
4/60 - 15/21 is -68/105.
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,
4/60 = 4 × 7/60 × 7 = 28/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
15/21 = 15 × 20/21 × 20 = 300/420 - Subtract the two like fractions:
28/420 - 300/420 = 28 - 300/420 = -272/420 - After reducing the fraction, the answer is -68/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/60-15/21 4/60-30/21 4/60-15/42 12/60-15/21 4/60-45/21 4/60-15/63 20/60-15/21 4/60-75/21 28/60-15/21