Subtract 3/21 from 14/8
1st number: 1 6/8, 2nd number: 3/21
14/8 - 3/21 is 45/28.
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,
3/21 = 3 × 8/21 × 8 = 24/168 - Subtract the two like fractions:
294/168 - 24/168 = 294 - 24/168 = 270/168 - After reducing the fraction, the answer is 45/28
- In mixed form: 117/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/8-3/21 14/8-6/21 14/16-3/21 14/8-3/42 42/8-3/21 14/8-9/21 14/24-3/21 14/8-3/63 70/8-3/21 14/8-15/21 14/40-3/21 98/8-3/21 14/56-3/21