Subtract 1/21 from 14/8
1st number: 1 6/8, 2nd number: 1/21
14/8 - 1/21 is 143/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
14/8 = 14 × 21/8 × 21 = 294/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
1/21 = 1 × 8/21 × 8 = 8/168 - Subtract the two like fractions:
294/168 - 8/168 = 294 - 8/168 = 286/168 - After reducing the fraction, the answer is 143/84
- In mixed form: 159/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/8-1/21 14/8-2/21 14/16-1/21 14/8-1/42 42/8-1/21 14/8-3/21 14/24-1/21 14/8-1/63 70/8-1/21 14/8-5/21 14/40-1/21 98/8-1/21 14/8-7/21 14/56-1/21