Subtract 14/72 from 21/10
1st number: 2 1/10, 2nd number: 14/72
21/10 - 14/72 is 343/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 10 × 36 = 360,
21/10 = 21 × 36/10 × 36 = 756/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
14/72 = 14 × 5/72 × 5 = 70/360 - Subtract the two like fractions:
756/360 - 70/360 = 756 - 70/360 = 686/360 - After reducing the fraction, the answer is 343/180
- In mixed form: 1163/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/10-14/72 21/10-28/72 21/20-14/72 63/10-14/72 21/10-42/72 21/30-14/72 21/10-70/72 21/50-14/72 21/10-98/72 21/70-14/72