Subtract 75/14 from 21/15
1st number: 1 6/15, 2nd number: 5 5/14
21/15 - 75/14 is -277/70.
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,
75/14 = 75 × 15/14 × 15 = 1125/210 - Subtract the two like fractions:
294/210 - 1125/210 = 294 - 1125/210 = -831/210 - After reducing the fraction, the answer is -277/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/15-75/14 21/30-75/14 21/15-75/28 63/15-75/14 21/45-75/14 21/15-75/42 21/75-75/14 21/15-75/70 21/15-75/98