Subtract 5/21 from 70/60
1st number: 1 10/60, 2nd number: 5/21
70/60 - 5/21 is 13/14.
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,
70/60 = 70 × 7/60 × 7 = 490/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
5/21 = 5 × 20/21 × 20 = 100/420 - Subtract the two like fractions:
490/420 - 100/420 = 490 - 100/420 = 390/420 - After reducing the fraction, the answer is 13/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/60-10/21 70/60-5/42 70/60-15/21 70/60-5/63 70/60-25/21 70/60-35/21