Subtract 25/14 from 21/15
1st number: 1 6/15, 2nd number: 1 11/14
21/15 - 25/14 is -27/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 14 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
21/15 = 21 × 14/15 × 14 = 294/210 - Likewise, for the 2nd fraction, since 14 × 15 = 210,
25/14 = 25 × 15/14 × 15 = 375/210 - Subtract the two like fractions:
294/210 - 375/210 = 294 - 375/210 = -81/210 - After reducing the fraction, the answer is -27/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/15-25/14 21/15-50/14 21/30-25/14 21/15-25/28 63/15-25/14 21/15-75/14 21/45-25/14 21/15-25/42 21/75-25/14 21/15-25/70 21/15-25/98