Subtract 49/60 from 42/21
1st number: 2 0/21, 2nd number: 49/60
42/21 - 49/60 is 71/60.
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,
42/21 = 42 × 20/21 × 20 = 840/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
49/60 = 49 × 7/60 × 7 = 343/420 - Subtract the two like fractions:
840/420 - 343/420 = 840 - 343/420 = 497/420 - After reducing the fraction, the answer is 71/60
- In mixed form: 111/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21-49/60 42/21-98/60 42/63-49/60