Subtract 75/60 from 8/21
1st number: 8/21, 2nd number: 1 15/60
8/21 - 75/60 is -73/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
8/21 = 8 × 20/21 × 20 = 160/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
75/60 = 75 × 7/60 × 7 = 525/420 - Subtract the two like fractions:
160/420 - 525/420 = 160 - 525/420 = -365/420 - After reducing the fraction, the answer is -73/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21-75/60 8/42-75/60 24/21-75/60 8/63-75/60 40/21-75/60 56/21-75/60